1: # The LearningOnline Network
2: # TCP networking package
3: #
4: # $Id: lonnet.pm,v 1.1307 2016/04/21 00:36:17 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: =pod
31:
32: =head1 NAME
33:
34: Apache::lonnet.pm
35:
36: =head1 SYNOPSIS
37:
38: This file is an interface to the lonc processes of
39: the LON-CAPA network as well as set of elaborated functions for handling information
40: necessary for navigating through a given cluster of LON-CAPA machines within a
41: domain. There are over 40 specialized functions in this module which handle the
42: reading and transmission of metadata, user information (ids, names, environments, roles,
43: logs), file information (storage, reading, directories, extensions, replication, embedded
44: styles and descriptors), educational resources (course descriptions, section names and
45: numbers), url hashing (to assign roles on a url basis), and translating abbreviated symbols to
46: and from more descriptive phrases or explanations.
47:
48: This is part of the LearningOnline Network with CAPA project
49: described at http://www.lon-capa.org.
50:
51: =head1 Package Variables
52:
53: These are largely undocumented, so if you decipher one please note it here.
54:
55: =over 4
56:
57: =item $processmarker
58:
59: Contains the time this process was started and this servers host id.
60:
61: =item $dumpcount
62:
63: Counts the number of times a message log flush has been attempted (regardless
64: of success) by this process. Used as part of the filename when messages are
65: delayed.
66:
67: =back
68:
69: =cut
70:
71: package Apache::lonnet;
72:
73: use strict;
74: use LWP::UserAgent();
75: use HTTP::Date;
76: use Image::Magick;
77:
78:
79: use Encode;
80:
81: use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
82: $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
83: %managerstab);
84:
85: my (%badServerCache, $memcache, %courselogs, %accesshash, %domainrolehash,
86: %userrolehash, $processmarker, $dumpcount, %coursedombuf,
87: %coursenumbuf, %coursehombuf, %coursedescrbuf, %courseinstcodebuf,
88: %courseownerbuf, %coursetypebuf,$locknum);
89:
90: use IO::Socket;
91: use GDBM_File;
92: use HTML::LCParser;
93: use Fcntl qw(:flock);
94: use Storable qw(thaw nfreeze);
95: use Time::HiRes qw( sleep gettimeofday tv_interval );
96: use Cache::Memcached;
97: use Digest::MD5;
98: use Math::Random;
99: use File::MMagic;
100: use LONCAPA qw(:DEFAULT :match);
101: use LONCAPA::Configuration;
102: use LONCAPA::lonmetadata;
103: use LONCAPA::Lond;
104:
105: use File::Copy;
106:
107: my $readit;
108: my $max_connection_retries = 20; # Or some such value.
109:
110: require Exporter;
111:
112: our @ISA = qw (Exporter);
113: our @EXPORT = qw(%env);
114:
115:
116: # ------------------------------------ Logging (parameters, docs, slots, roles)
117: {
118: my $logid;
119: sub write_log {
120: my ($context,$hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
121: if ($context eq 'course') {
122: if (($cnum eq '') || ($cdom eq '')) {
123: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
124: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
125: }
126: }
127: $logid ++;
128: my $now = time();
129: my $id=$now.'00000'.$$.'00000'.$logid;
130: my $logentry = {
131: $id => {
132: 'exe_uname' => $env{'user.name'},
133: 'exe_udom' => $env{'user.domain'},
134: 'exe_time' => $now,
135: 'exe_ip' => $ENV{'REMOTE_ADDR'},
136: 'delflag' => $delflag,
137: 'logentry' => $storehash,
138: 'uname' => $uname,
139: 'udom' => $udom,
140: }
141: };
142: return &put('nohist_'.$hash_name,$logentry,$cdom,$cnum);
143: }
144: }
145:
146: sub logtouch {
147: my $execdir=$perlvar{'lonDaemons'};
148: unless (-e "$execdir/logs/lonnet.log") {
149: open(my $fh,">>$execdir/logs/lonnet.log");
150: close $fh;
151: }
152: my ($wwwuid,$wwwgid)=(getpwnam('www'))[2,3];
153: chown($wwwuid,$wwwgid,$execdir.'/logs/lonnet.log');
154: }
155:
156: sub logthis {
157: my $message=shift;
158: my $execdir=$perlvar{'lonDaemons'};
159: my $now=time;
160: my $local=localtime($now);
161: if (open(my $fh,">>$execdir/logs/lonnet.log")) {
162: my $logstring = $local. " ($$): ".$message."\n"; # Keep any \'s in string.
163: print $fh $logstring;
164: close($fh);
165: }
166: return 1;
167: }
168:
169: sub logperm {
170: my $message=shift;
171: my $execdir=$perlvar{'lonDaemons'};
172: my $now=time;
173: my $local=localtime($now);
174: if (open(my $fh,">>$execdir/logs/lonnet.perm.log")) {
175: print $fh "$now:$message:$local\n";
176: close($fh);
177: }
178: return 1;
179: }
180:
181: sub create_connection {
182: my ($hostname,$lonid) = @_;
183: my $client=IO::Socket::UNIX->new(Peer => $perlvar{'lonSockCreate'},
184: Type => SOCK_STREAM,
185: Timeout => 10);
186: return 0 if (!$client);
187: print $client (join(':',$hostname,$lonid,&machine_ids($hostname))."\n");
188: my $result = <$client>;
189: chomp($result);
190: return 1 if ($result eq 'done');
191: return 0;
192: }
193:
194: sub get_server_timezone {
195: my ($cnum,$cdom) = @_;
196: my $home=&homeserver($cnum,$cdom);
197: if ($home ne 'no_host') {
198: my $cachetime = 24*3600;
199: my ($timezone,$cached)=&is_cached_new('servertimezone',$home);
200: if (defined($cached)) {
201: return $timezone;
202: } else {
203: my $timezone = &reply('servertimezone',$home);
204: return &do_cache_new('servertimezone',$home,$timezone,$cachetime);
205: }
206: }
207: }
208:
209: sub get_server_distarch {
210: my ($lonhost,$ignore_cache) = @_;
211: if (defined($lonhost)) {
212: if (!defined(&hostname($lonhost))) {
213: return;
214: }
215: my $cachetime = 12*3600;
216: if (!$ignore_cache) {
217: my ($distarch,$cached)=&is_cached_new('serverdistarch',$lonhost);
218: if (defined($cached)) {
219: return $distarch;
220: }
221: }
222: my $rep = &reply('serverdistarch',$lonhost);
223: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
224: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
225: $rep eq '') {
226: return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
227: }
228: }
229: return;
230: }
231:
232: sub get_server_loncaparev {
233: my ($dom,$lonhost,$ignore_cache,$caller) = @_;
234: if (defined($lonhost)) {
235: if (!defined(&hostname($lonhost))) {
236: undef($lonhost);
237: }
238: }
239: if (!defined($lonhost)) {
240: if (defined(&domain($dom,'primary'))) {
241: $lonhost=&domain($dom,'primary');
242: if ($lonhost eq 'no_host') {
243: undef($lonhost);
244: }
245: }
246: }
247: if (defined($lonhost)) {
248: my $cachetime = 12*3600;
249: if (!$ignore_cache) {
250: my ($loncaparev,$cached)=&is_cached_new('serverloncaparev',$lonhost);
251: if (defined($cached)) {
252: return $loncaparev;
253: }
254: }
255: my ($answer,$loncaparev);
256: my @ids=¤t_machine_ids();
257: if (grep(/^\Q$lonhost\E$/,@ids)) {
258: $answer = $perlvar{'lonVersion'};
259: if ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
260: $loncaparev = $1;
261: }
262: } else {
263: $answer = &reply('serverloncaparev',$lonhost);
264: if (($answer eq 'unknown_cmd') || ($answer eq 'con_lost')) {
265: if ($caller eq 'loncron') {
266: my $ua=new LWP::UserAgent;
267: $ua->timeout(4);
268: my $protocol = $protocol{$lonhost};
269: $protocol = 'http' if ($protocol ne 'https');
270: my $url = $protocol.'://'.&hostname($lonhost).'/adm/about.html';
271: my $request=new HTTP::Request('GET',$url);
272: my $response=$ua->request($request);
273: unless ($response->is_error()) {
274: my $content = $response->content;
275: if ($content =~ /<p>VERSION\:\s*([\w.\-]+)<\/p>/) {
276: $loncaparev = $1;
277: }
278: }
279: } else {
280: $loncaparev = $loncaparevs{$lonhost};
281: }
282: } elsif ($answer =~ /^[\'\"]?([\w.\-]+)[\'\"]?$/) {
283: $loncaparev = $1;
284: }
285: }
286: return &do_cache_new('serverloncaparev',$lonhost,$loncaparev,$cachetime);
287: }
288: }
289:
290: sub get_server_homeID {
291: my ($hostname,$ignore_cache,$caller) = @_;
292: unless ($ignore_cache) {
293: my ($serverhomeID,$cached)=&is_cached_new('serverhomeID',$hostname);
294: if (defined($cached)) {
295: return $serverhomeID;
296: }
297: }
298: my $cachetime = 12*3600;
299: my $serverhomeID;
300: if ($caller eq 'loncron') {
301: my @machine_ids = &machine_ids($hostname);
302: foreach my $id (@machine_ids) {
303: my $response = &reply('serverhomeID',$id);
304: unless (($response eq 'unknown_cmd') || ($response eq 'con_lost')) {
305: $serverhomeID = $response;
306: last;
307: }
308: }
309: if ($serverhomeID eq '') {
310: $serverhomeID = $machine_ids[-1];
311: }
312: } else {
313: $serverhomeID = $serverhomeIDs{$hostname};
314: }
315: return &do_cache_new('serverhomeID',$hostname,$serverhomeID,$cachetime);
316: }
317:
318: sub get_remote_globals {
319: my ($lonhost,$whathash,$ignore_cache) = @_;
320: my ($result,%returnhash,%whatneeded);
321: if (ref($whathash) eq 'HASH') {
322: foreach my $what (sort(keys(%{$whathash}))) {
323: my $hashid = $lonhost.'-'.$what;
324: my ($response,$cached);
325: unless ($ignore_cache) {
326: ($response,$cached)=&is_cached_new('lonnetglobal',$hashid);
327: }
328: if (defined($cached)) {
329: $returnhash{$what} = $response;
330: } else {
331: $whatneeded{$what} = 1;
332: }
333: }
334: if (keys(%whatneeded) == 0) {
335: $result = 'ok';
336: } else {
337: my $requested = &freeze_escape(\%whatneeded);
338: my $rep=&reply('readlonnetglobal:'.$requested,$lonhost);
339: if (($rep=~/^(refused|rejected|error)/) || ($rep eq 'con_lost') ||
340: ($rep eq 'unknown_cmd')) {
341: $result = $rep;
342: } else {
343: $result = 'ok';
344: my @pairs=split(/\&/,$rep);
345: foreach my $item (@pairs) {
346: my ($key,$value)=split(/=/,$item,2);
347: my $what = &unescape($key);
348: my $hashid = $lonhost.'-'.$what;
349: $returnhash{$what}=&thaw_unescape($value);
350: &do_cache_new('lonnetglobal',$hashid,$returnhash{$what},600);
351: }
352: }
353: }
354: }
355: return ($result,\%returnhash);
356: }
357:
358: sub remote_devalidate_cache {
359: my ($lonhost,$cachekeys) = @_;
360: my $items;
361: return unless (ref($cachekeys) eq 'ARRAY');
362: my $cachestr = join('&',@{$cachekeys});
363: my $response = &reply('devalidatecache:'.&escape($cachestr),$lonhost);
364: return $response;
365: }
366:
367: # -------------------------------------------------- Non-critical communication
368: sub subreply {
369: my ($cmd,$server)=@_;
370: my $peerfile="$perlvar{'lonSockDir'}/".&hostname($server);
371: #
372: # With loncnew process trimming, there's a timing hole between lonc server
373: # process exit and the master server picking up the listen on the AF_UNIX
374: # socket. In that time interval, a lock file will exist:
375:
376: my $lockfile=$peerfile.".lock";
377: while (-e $lockfile) { # Need to wait for the lockfile to disappear.
378: sleep(0.1);
379: }
380: # At this point, either a loncnew parent is listening or an old lonc
381: # or loncnew child is listening so we can connect or everything's dead.
382: #
383: # We'll give the connection a few tries before abandoning it. If
384: # connection is not possible, we'll con_lost back to the client.
385: #
386: my $client;
387: for (my $retries = 0; $retries < $max_connection_retries; $retries++) {
388: $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
389: Type => SOCK_STREAM,
390: Timeout => 10);
391: if ($client) {
392: last; # Connected!
393: } else {
394: &create_connection(&hostname($server),$server);
395: }
396: sleep(0.1); # Try again later if failed connection.
397: }
398: my $answer;
399: if ($client) {
400: print $client "sethost:$server:$cmd\n";
401: $answer=<$client>;
402: if (!$answer) { $answer="con_lost"; }
403: chomp($answer);
404: } else {
405: $answer = 'con_lost'; # Failed connection.
406: }
407: return $answer;
408: }
409:
410: sub reply {
411: my ($cmd,$server)=@_;
412: unless (defined(&hostname($server))) { return 'no_such_host'; }
413: my $answer=subreply($cmd,$server);
414: if (($answer=~/^refused/) || ($answer=~/^rejected/)) {
415: &logthis("<font color=\"blue\">WARNING:".
416: " $cmd to $server returned $answer</font>");
417: }
418: return $answer;
419: }
420:
421: # ----------------------------------------------------------- Send USR1 to lonc
422:
423: sub reconlonc {
424: my ($lonid) = @_;
425: if ($lonid) {
426: my $hostname = &hostname($lonid);
427: my $peerfile="$perlvar{'lonSockDir'}/$hostname";
428: if ($hostname && -e $peerfile) {
429: &logthis("Trying to reconnect lonc for $lonid ($hostname)");
430: my $client=IO::Socket::UNIX->new(Peer => $peerfile,
431: Type => SOCK_STREAM,
432: Timeout => 10);
433: if ($client) {
434: print $client ("reset_retries\n");
435: my $answer=<$client>;
436: #reset just this one.
437: }
438: }
439: return;
440: }
441:
442: &logthis("Trying to reconnect lonc");
443: my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
444: if (open(my $fh,"<$loncfile")) {
445: my $loncpid=<$fh>;
446: chomp($loncpid);
447: if (kill 0 => $loncpid) {
448: &logthis("lonc at pid $loncpid responding, sending USR1");
449: kill USR1 => $loncpid;
450: sleep 1;
451: } else {
452: &logthis(
453: "<font color=\"blue\">WARNING:".
454: " lonc at pid $loncpid not responding, giving up</font>");
455: }
456: } else {
457: &logthis('<font color="blue">WARNING: lonc not running, giving up</font>');
458: }
459: }
460:
461: # ------------------------------------------------------ Critical communication
462:
463: sub critical {
464: my ($cmd,$server)=@_;
465: unless (&hostname($server)) {
466: &logthis("<font color=\"blue\">WARNING:".
467: " Critical message to unknown server ($server)</font>");
468: return 'no_such_host';
469: }
470: my $answer=reply($cmd,$server);
471: if ($answer eq 'con_lost') {
472: &reconlonc($server);
473: my $answer=reply($cmd,$server);
474: if ($answer eq 'con_lost') {
475: my $now=time;
476: my $middlename=$cmd;
477: $middlename=substr($middlename,0,16);
478: $middlename=~s/\W//g;
479: my $dfilename=
480: "$perlvar{'lonSockDir'}/delayed/$now.$dumpcount.$$.$middlename.$server";
481: $dumpcount++;
482: {
483: my $dfh;
484: if (open($dfh,">$dfilename")) {
485: print $dfh "$cmd\n";
486: close($dfh);
487: }
488: }
489: sleep 1;
490: my $wcmd='';
491: {
492: my $dfh;
493: if (open($dfh,"<$dfilename")) {
494: $wcmd=<$dfh>;
495: close($dfh);
496: }
497: }
498: chomp($wcmd);
499: if ($wcmd eq $cmd) {
500: &logthis("<font color=\"blue\">WARNING: ".
501: "Connection buffer $dfilename: $cmd</font>");
502: &logperm("D:$server:$cmd");
503: return 'con_delayed';
504: } else {
505: &logthis("<font color=\"red\">CRITICAL:"
506: ." Critical connection failed: $server $cmd</font>");
507: &logperm("F:$server:$cmd");
508: return 'con_failed';
509: }
510: }
511: }
512: return $answer;
513: }
514:
515: # ------------------------------------------- check if return value is an error
516:
517: sub error {
518: my ($result) = @_;
519: if ($result =~ /^(con_lost|no_such_host|error: (\d+) (.*))/) {
520: if ($2 == 2) { return undef; }
521: return $1;
522: }
523: return undef;
524: }
525:
526: sub convert_and_load_session_env {
527: my ($lonidsdir,$handle)=@_;
528: my @profile;
529: {
530: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
531: if (!$opened) {
532: return 0;
533: }
534: flock($idf,LOCK_SH);
535: @profile=<$idf>;
536: close($idf);
537: }
538: my %temp_env;
539: foreach my $line (@profile) {
540: if ($line !~ m/=/) {
541: return 0;
542: }
543: chomp($line);
544: my ($envname,$envvalue)=split(/=/,$line,2);
545: $temp_env{&unescape($envname)} = &unescape($envvalue);
546: }
547: unlink("$lonidsdir/$handle.id");
548: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",&GDBM_WRCREAT(),
549: 0640)) {
550: %disk_env = %temp_env;
551: @env{keys(%temp_env)} = @disk_env{keys(%temp_env)};
552: untie(%disk_env);
553: }
554: return 1;
555: }
556:
557: # ------------------------------------------- Transfer profile into environment
558: my $env_loaded;
559: sub transfer_profile_to_env {
560: my ($lonidsdir,$handle,$force_transfer) = @_;
561: if (!$force_transfer && $env_loaded) { return; }
562:
563: if (!defined($lonidsdir)) {
564: $lonidsdir = $perlvar{'lonIDsDir'};
565: }
566: if (!defined($handle)) {
567: ($handle) = ($env{'user.environment'} =~m|/([^/]+)\.id$| );
568: }
569:
570: my $convert;
571: {
572: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
573: if (!$opened) {
574: return;
575: }
576: flock($idf,LOCK_SH);
577: if (tie(my %disk_env,'GDBM_File',"$lonidsdir/$handle.id",
578: &GDBM_READER(),0640)) {
579: @env{keys(%disk_env)} = @disk_env{keys(%disk_env)};
580: untie(%disk_env);
581: } else {
582: $convert = 1;
583: }
584: }
585: if ($convert) {
586: if (!&convert_and_load_session_env($lonidsdir,$handle)) {
587: &logthis("Failed to load session, or convert session.");
588: }
589: }
590:
591: my %remove;
592: while ( my $envname = each(%env) ) {
593: if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
594: if ($time < time-300) {
595: $remove{$key}++;
596: }
597: }
598: }
599:
600: $env{'user.environment'} = "$lonidsdir/$handle.id";
601: $env_loaded=1;
602: foreach my $expired_key (keys(%remove)) {
603: &delenv($expired_key);
604: }
605: }
606:
607: # ---------------------------------------------------- Check for valid session
608: sub check_for_valid_session {
609: my ($r,$name,$userhashref) = @_;
610: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
611: if ($name eq '') {
612: $name = 'lonID';
613: }
614: my $lonid=$cookies{$name};
615: return undef if (!$lonid);
616:
617: my $handle=&LONCAPA::clean_handle($lonid->value);
618: my $lonidsdir;
619: if ($name eq 'lonDAV') {
620: $lonidsdir=$r->dir_config('lonDAVsessDir');
621: } else {
622: $lonidsdir=$r->dir_config('lonIDsDir');
623: }
624: return undef if (!-e "$lonidsdir/$handle.id");
625:
626: my $opened = open(my $idf,'+<',"$lonidsdir/$handle.id");
627: return undef if (!$opened);
628:
629: flock($idf,LOCK_SH);
630: my %disk_env;
631: if (!tie(%disk_env,'GDBM_File',"$lonidsdir/$handle.id",
632: &GDBM_READER(),0640)) {
633: return undef;
634: }
635:
636: if (!defined($disk_env{'user.name'})
637: || !defined($disk_env{'user.domain'})) {
638: return undef;
639: }
640:
641: if (ref($userhashref) eq 'HASH') {
642: $userhashref->{'name'} = $disk_env{'user.name'};
643: $userhashref->{'domain'} = $disk_env{'user.domain'};
644: }
645:
646: return $handle;
647: }
648:
649: sub timed_flock {
650: my ($file,$lock_type) = @_;
651: my $failed=0;
652: eval {
653: local $SIG{__DIE__}='DEFAULT';
654: local $SIG{ALRM}=sub {
655: $failed=1;
656: die("failed lock");
657: };
658: alarm(13);
659: flock($file,$lock_type);
660: alarm(0);
661: };
662: if ($failed) {
663: return undef;
664: } else {
665: return 1;
666: }
667: }
668:
669: # ---------------------------------------------------------- Append Environment
670:
671: sub appenv {
672: my ($newenv,$roles) = @_;
673: if (ref($newenv) eq 'HASH') {
674: foreach my $key (keys(%{$newenv})) {
675: my $refused = 0;
676: if (($key =~ /^user\.role/) || ($key =~ /^user\.priv/)) {
677: $refused = 1;
678: if (ref($roles) eq 'ARRAY') {
679: my ($type,$role) = ($key =~ m{^user\.(role|priv)\.(.+?)\./});
680: if (grep(/^\Q$role\E$/,@{$roles})) {
681: $refused = 0;
682: }
683: }
684: }
685: if ($refused) {
686: &logthis("<font color=\"blue\">WARNING: ".
687: "Attempt to modify environment ".$key." to ".$newenv->{$key}
688: .'</font>');
689: delete($newenv->{$key});
690: } else {
691: $env{$key}=$newenv->{$key};
692: }
693: }
694: my $opened = open(my $env_file,'+<',$env{'user.environment'});
695: if ($opened
696: && &timed_flock($env_file,LOCK_EX)
697: &&
698: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
699: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
700: while (my ($key,$value) = each(%{$newenv})) {
701: $disk_env{$key} = $value;
702: }
703: untie(%disk_env);
704: }
705: }
706: return 'ok';
707: }
708: # ----------------------------------------------------- Delete from Environment
709:
710: sub delenv {
711: my ($delthis,$regexp,$roles) = @_;
712: if (($delthis=~/^user\.role/) || ($delthis=~/^user\.priv/)) {
713: my $refused = 1;
714: if (ref($roles) eq 'ARRAY') {
715: my ($type,$role) = ($delthis =~ /^user\.(role|priv)\.([^.]+)\./);
716: if (grep(/^\Q$role\E$/,@{$roles})) {
717: $refused = 0;
718: }
719: }
720: if ($refused) {
721: &logthis("<font color=\"blue\">WARNING: ".
722: "Attempt to delete from environment ".$delthis);
723: return 'error';
724: }
725: }
726: my $opened = open(my $env_file,'+<',$env{'user.environment'});
727: if ($opened
728: && &timed_flock($env_file,LOCK_EX)
729: &&
730: tie(my %disk_env,'GDBM_File',$env{'user.environment'},
731: (&GDBM_WRITER()|&GDBM_NOLOCK()),0640)) {
732: foreach my $key (keys(%disk_env)) {
733: if ($regexp) {
734: if ($key=~/^$delthis/) {
735: delete($env{$key});
736: delete($disk_env{$key});
737: }
738: } else {
739: if ($key=~/^\Q$delthis\E/) {
740: delete($env{$key});
741: delete($disk_env{$key});
742: }
743: }
744: }
745: untie(%disk_env);
746: }
747: return 'ok';
748: }
749:
750: sub get_env_multiple {
751: my ($name) = @_;
752: my @values;
753: if (defined($env{$name})) {
754: # exists is it an array
755: if (ref($env{$name})) {
756: @values=@{ $env{$name} };
757: } else {
758: $values[0]=$env{$name};
759: }
760: }
761: return(@values);
762: }
763:
764: # ------------------------------------------------------------------- Locking
765:
766: sub set_lock {
767: my ($text)=@_;
768: $locknum++;
769: my $id=$$.'-'.$locknum;
770: &appenv({'session.locks' => $env{'session.locks'}.','.$id,
771: 'session.lock.'.$id => $text});
772: return $id;
773: }
774:
775: sub get_locks {
776: my $num=0;
777: my %texts=();
778: foreach my $lock (split(/\,/,$env{'session.locks'})) {
779: if ($lock=~/\w/) {
780: $num++;
781: $texts{$lock}=$env{'session.lock.'.$lock};
782: }
783: }
784: return ($num,%texts);
785: }
786:
787: sub remove_lock {
788: my ($id)=@_;
789: my $newlocks='';
790: foreach my $lock (split(/\,/,$env{'session.locks'})) {
791: if (($lock=~/\w/) && ($lock ne $id)) {
792: $newlocks.=','.$lock;
793: }
794: }
795: &appenv({'session.locks' => $newlocks});
796: &delenv('session.lock.'.$id);
797: }
798:
799: sub remove_all_locks {
800: my $activelocks=$env{'session.locks'};
801: foreach my $lock (split(/\,/,$env{'session.locks'})) {
802: if ($lock=~/\w/) {
803: &remove_lock($lock);
804: }
805: }
806: }
807:
808:
809: # ------------------------------------------ Find out current server userload
810: sub userload {
811: my $numusers=0;
812: {
813: opendir(LONIDS,$perlvar{'lonIDsDir'});
814: my $filename;
815: my $curtime=time;
816: while ($filename=readdir(LONIDS)) {
817: next if ($filename eq '.' || $filename eq '..');
818: next if ($filename =~ /publicuser_\d+\.id/);
819: my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9];
820: if ($curtime-$mtime < 1800) { $numusers++; }
821: }
822: closedir(LONIDS);
823: }
824: my $userloadpercent=0;
825: my $maxuserload=$perlvar{'lonUserLoadLim'};
826: if ($maxuserload) {
827: $userloadpercent=100*$numusers/$maxuserload;
828: }
829: $userloadpercent=sprintf("%.2f",$userloadpercent);
830: return $userloadpercent;
831: }
832:
833: # ------------------------------ Find server with least workload from spare.tab
834:
835: sub spareserver {
836: my ($loadpercent,$userloadpercent,$want_server_name,$udom) = @_;
837: my $spare_server;
838: if ($userloadpercent !~ /\d/) { $userloadpercent=0; }
839: my $lowest_load=($loadpercent > $userloadpercent) ? $loadpercent
840: : $userloadpercent;
841: my ($uint_dom,$remotesessions);
842: if (($udom ne '') && (&domain($udom) ne '')) {
843: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
844: $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
845: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
846: $remotesessions = $udomdefaults{'remotesessions'};
847: }
848: my $spareshash = &this_host_spares($udom);
849: if (ref($spareshash) eq 'HASH') {
850: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
851: foreach my $try_server (@{ $spareshash->{'primary'} }) {
852: next unless (&spare_can_host($udom,$uint_dom,$remotesessions,
853: $try_server));
854: ($spare_server, $lowest_load) =
855: &compare_server_load($try_server, $spare_server, $lowest_load);
856: }
857: }
858:
859: my $found_server = ($spare_server ne '' && $lowest_load < 100);
860:
861: if (!$found_server) {
862: if (ref($spareshash->{'default'}) eq 'ARRAY') {
863: foreach my $try_server (@{ $spareshash->{'default'} }) {
864: next unless (&spare_can_host($udom,$uint_dom,
865: $remotesessions,$try_server));
866: ($spare_server, $lowest_load) =
867: &compare_server_load($try_server, $spare_server, $lowest_load);
868: }
869: }
870: }
871: }
872:
873: if (!$want_server_name) {
874: my $protocol = 'http';
875: if ($protocol{$spare_server} eq 'https') {
876: $protocol = $protocol{$spare_server};
877: }
878: if (defined($spare_server)) {
879: my $hostname = &hostname($spare_server);
880: if (defined($hostname)) {
881: $spare_server = $protocol.'://'.$hostname;
882: }
883: }
884: }
885: return $spare_server;
886: }
887:
888: sub compare_server_load {
889: my ($try_server, $spare_server, $lowest_load, $required) = @_;
890:
891: if ($required) {
892: my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
893: my $remoterev = &get_server_loncaparev(undef,$try_server);
894: my ($major,$minor) = ($remoterev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
895: if (($major eq '' && $minor eq '') ||
896: (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
897: return ($spare_server,$lowest_load);
898: }
899: }
900:
901: my $loadans = &reply('load', $try_server);
902: my $userloadans = &reply('userload',$try_server);
903:
904: if ($loadans !~ /\d/ && $userloadans !~ /\d/) {
905: return ($spare_server, $lowest_load); #didn't get a number from the server
906: }
907:
908: my $load;
909: if ($loadans =~ /\d/) {
910: if ($userloadans =~ /\d/) {
911: #both are numbers, pick the bigger one
912: $load = ($loadans > $userloadans) ? $loadans
913: : $userloadans;
914: } else {
915: $load = $loadans;
916: }
917: } else {
918: $load = $userloadans;
919: }
920:
921: if (($load =~ /\d/) && ($load < $lowest_load)) {
922: $spare_server = $try_server;
923: $lowest_load = $load;
924: }
925: return ($spare_server,$lowest_load);
926: }
927:
928: # --------------------------- ask offload servers if user already has a session
929: sub find_existing_session {
930: my ($udom,$uname) = @_;
931: my $spareshash = &this_host_spares($udom);
932: if (ref($spareshash) eq 'HASH') {
933: if (ref($spareshash->{'primary'}) eq 'ARRAY') {
934: foreach my $try_server (@{ $spareshash->{'primary'} }) {
935: return $try_server if (&has_user_session($try_server, $udom, $uname));
936: }
937: }
938: if (ref($spareshash->{'default'}) eq 'ARRAY') {
939: foreach my $try_server (@{ $spareshash->{'default'} }) {
940: return $try_server if (&has_user_session($try_server, $udom, $uname));
941: }
942: }
943: }
944: return;
945: }
946:
947: # -------------------------------- ask if server already has a session for user
948: sub has_user_session {
949: my ($lonid,$udom,$uname) = @_;
950: my $result = &reply(join(':','userhassession',
951: map {&escape($_)} ($udom,$uname)),$lonid);
952: return 1 if ($result eq 'ok');
953:
954: return 0;
955: }
956:
957: # --------- determine least loaded server in a user's domain which allows login
958:
959: sub choose_server {
960: my ($udom,$checkloginvia,$required,$skiploadbal) = @_;
961: my %domconfhash = &Apache::loncommon::get_domainconf($udom);
962: my %servers = &get_servers($udom);
963: my $lowest_load = 30000;
964: my ($login_host,$hostname,$portal_path,$isredirect,$balancers);
965: if ($skiploadbal) {
966: ($balancers,my $cached)=&is_cached_new('loadbalancing',$udom);
967: unless (defined($cached)) {
968: my $cachetime = 60*60*24;
969: my %domconfig =
970: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
971: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
972: $balancers = &do_cache_new('loadbalancing',$udom,$domconfig{'loadbalancing'},
973: $cachetime);
974: }
975: }
976: }
977: foreach my $lonhost (keys(%servers)) {
978: if ($skiploadbal) {
979: if (ref($balancers) eq 'HASH') {
980: next if (exists($balancers->{$lonhost}));
981: }
982: }
983: my $loginvia;
984: if ($checkloginvia) {
985: $loginvia = $domconfhash{$udom.'.login.loginvia_'.$lonhost};
986: if ($loginvia) {
987: my ($server,$path) = split(/:/,$loginvia);
988: ($login_host, $lowest_load) =
989: &compare_server_load($server, $login_host, $lowest_load, $required);
990: if ($login_host eq $server) {
991: $portal_path = $path;
992: $isredirect = 1;
993: }
994: } else {
995: ($login_host, $lowest_load) =
996: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
997: if ($login_host eq $lonhost) {
998: $portal_path = '';
999: $isredirect = '';
1000: }
1001: }
1002: } else {
1003: ($login_host, $lowest_load) =
1004: &compare_server_load($lonhost, $login_host, $lowest_load, $required);
1005: }
1006: }
1007: if ($login_host ne '') {
1008: $hostname = &hostname($login_host);
1009: }
1010: return ($login_host,$hostname,$portal_path,$isredirect);
1011: }
1012:
1013: # --------------------------------------------- Try to change a user's password
1014:
1015: sub changepass {
1016: my ($uname,$udom,$currentpass,$newpass,$server,$context)=@_;
1017: $currentpass = &escape($currentpass);
1018: $newpass = &escape($newpass);
1019: my $lonhost = $perlvar{'lonHostID'};
1020: my $answer = reply("encrypt:passwd:$udom:$uname:$currentpass:$newpass:$context:$lonhost",
1021: $server);
1022: if (! $answer) {
1023: &logthis("No reply on password change request to $server ".
1024: "by $uname in domain $udom.");
1025: } elsif ($answer =~ "^ok") {
1026: &logthis("$uname in $udom successfully changed their password ".
1027: "on $server.");
1028: } elsif ($answer =~ "^pwchange_failure") {
1029: &logthis("$uname in $udom was unable to change their password ".
1030: "on $server. The action was blocked by either lcpasswd ".
1031: "or pwchange");
1032: } elsif ($answer =~ "^non_authorized") {
1033: &logthis("$uname in $udom did not get their password correct when ".
1034: "attempting to change it on $server.");
1035: } elsif ($answer =~ "^auth_mode_error") {
1036: &logthis("$uname in $udom attempted to change their password despite ".
1037: "not being locally or internally authenticated on $server.");
1038: } elsif ($answer =~ "^unknown_user") {
1039: &logthis("$uname in $udom attempted to change their password ".
1040: "on $server but were unable to because $server is not ".
1041: "their home server.");
1042: } elsif ($answer =~ "^refused") {
1043: &logthis("$server refused to change $uname in $udom password because ".
1044: "it was sent an unencrypted request to change the password.");
1045: } elsif ($answer =~ "invalid_client") {
1046: &logthis("$server refused to change $uname in $udom password because ".
1047: "it was a reset by e-mail originating from an invalid server.");
1048: }
1049: return $answer;
1050: }
1051:
1052: # ----------------------- Try to determine user's current authentication scheme
1053:
1054: sub queryauthenticate {
1055: my ($uname,$udom)=@_;
1056: my $uhome=&homeserver($uname,$udom);
1057: if (!$uhome) {
1058: &logthis("User $uname at $udom is unknown when looking for authentication mechanism");
1059: return 'no_host';
1060: }
1061: my $answer=reply("encrypt:currentauth:$udom:$uname",$uhome);
1062: if ($answer =~ /^(unknown_user|refused|con_lost)/) {
1063: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1064: }
1065: return $answer;
1066: }
1067:
1068: # --------- Try to authenticate user from domain's lib servers (first this one)
1069:
1070: sub authenticate {
1071: my ($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)=@_;
1072: $upass=&escape($upass);
1073: $uname= &LONCAPA::clean_username($uname);
1074: my $uhome=&homeserver($uname,$udom,1);
1075: my $newhome;
1076: if ((!$uhome) || ($uhome eq 'no_host')) {
1077: # Maybe the machine was offline and only re-appeared again recently?
1078: &reconlonc();
1079: # One more
1080: $uhome=&homeserver($uname,$udom,1);
1081: if (($uhome eq 'no_host') && $checkdefauth) {
1082: if (defined(&domain($udom,'primary'))) {
1083: $newhome=&domain($udom,'primary');
1084: }
1085: if ($newhome ne '') {
1086: $uhome = $newhome;
1087: }
1088: }
1089: if ((!$uhome) || ($uhome eq 'no_host')) {
1090: &logthis("User $uname at $udom is unknown in authenticate");
1091: return 'no_host';
1092: }
1093: }
1094: my $answer=reply("encrypt:auth:$udom:$uname:$upass:$checkdefauth:$clientcancheckhost",$uhome);
1095: if ($answer eq 'authorized') {
1096: if ($newhome) {
1097: &logthis("User $uname at $udom authorized by $uhome, but needs account");
1098: return 'no_account_on_host';
1099: } else {
1100: &logthis("User $uname at $udom authorized by $uhome");
1101: return $uhome;
1102: }
1103: }
1104: if ($answer eq 'non_authorized') {
1105: &logthis("User $uname at $udom rejected by $uhome");
1106: return 'no_host';
1107: }
1108: &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
1109: return 'no_host';
1110: }
1111:
1112: sub can_host_session {
1113: my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
1114: my $canhost = 1;
1115: my $host_idn = &Apache::lonnet::internet_dom($lonhost);
1116: if (ref($remotesessions) eq 'HASH') {
1117: if (ref($remotesessions->{'excludedomain'}) eq 'ARRAY') {
1118: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'excludedomain'}})) {
1119: $canhost = 0;
1120: } else {
1121: $canhost = 1;
1122: }
1123: }
1124: if (ref($remotesessions->{'includedomain'}) eq 'ARRAY') {
1125: if (grep(/^\Q$host_idn\E$/,@{$remotesessions->{'includedomain'}})) {
1126: $canhost = 1;
1127: } else {
1128: $canhost = 0;
1129: }
1130: }
1131: if ($canhost) {
1132: if ($remotesessions->{'version'} ne '') {
1133: my ($reqmajor,$reqminor) = ($remotesessions->{'version'} =~ /^(\d+)\.(\d+)$/);
1134: if ($reqmajor ne '' && $reqminor ne '') {
1135: if ($remoterev =~ /^\'?(\d+)\.(\d+)/) {
1136: my $major = $1;
1137: my $minor = $2;
1138: if (($major < $reqmajor ) ||
1139: (($major == $reqmajor) && ($minor < $reqminor))) {
1140: $canhost = 0;
1141: }
1142: } else {
1143: $canhost = 0;
1144: }
1145: }
1146: }
1147: }
1148: }
1149: if ($canhost) {
1150: if (ref($hostedsessions) eq 'HASH') {
1151: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1152: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1153: if (ref($hostedsessions->{'excludedomain'}) eq 'ARRAY') {
1154: if (($uint_dom ne '') &&
1155: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'excludedomain'}}))) {
1156: $canhost = 0;
1157: } else {
1158: $canhost = 1;
1159: }
1160: }
1161: if (ref($hostedsessions->{'includedomain'}) eq 'ARRAY') {
1162: if (($uint_dom ne '') &&
1163: (grep(/^\Q$uint_dom\E$/,@{$hostedsessions->{'includedomain'}}))) {
1164: $canhost = 1;
1165: } else {
1166: $canhost = 0;
1167: }
1168: }
1169: }
1170: }
1171: return $canhost;
1172: }
1173:
1174: sub spare_can_host {
1175: my ($udom,$uint_dom,$remotesessions,$try_server)=@_;
1176: my $canhost=1;
1177: my $try_server_hostname = &hostname($try_server);
1178: my $serverhomeID = &get_server_homeID($try_server_hostname);
1179: my $serverhomedom = &host_domain($serverhomeID);
1180: my %defdomdefaults = &get_domain_defaults($serverhomedom);
1181: if (ref($defdomdefaults{'offloadnow'}) eq 'HASH') {
1182: if ($defdomdefaults{'offloadnow'}{$try_server}) {
1183: $canhost = 0;
1184: }
1185: }
1186: if (($canhost) && ($uint_dom)) {
1187: my @intdoms;
1188: my $internet_names = &get_internet_names($try_server);
1189: if (ref($internet_names) eq 'ARRAY') {
1190: @intdoms = @{$internet_names};
1191: }
1192: unless (grep(/^\Q$uint_dom\E$/,@intdoms)) {
1193: my $remoterev = &get_server_loncaparev(undef,$try_server);
1194: $canhost = &can_host_session($udom,$try_server,$remoterev,
1195: $remotesessions,
1196: $defdomdefaults{'hostedsessions'});
1197: }
1198: }
1199: return $canhost;
1200: }
1201:
1202: sub this_host_spares {
1203: my ($dom) = @_;
1204: my ($dom_in_use,$lonhost_in_use,$result);
1205: my @hosts = ¤t_machine_ids();
1206: foreach my $lonhost (@hosts) {
1207: if (&host_domain($lonhost) eq $dom) {
1208: $dom_in_use = $dom;
1209: $lonhost_in_use = $lonhost;
1210: last;
1211: }
1212: }
1213: if ($dom_in_use ne '') {
1214: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1215: }
1216: if (ref($result) ne 'HASH') {
1217: $lonhost_in_use = $perlvar{'lonHostID'};
1218: $dom_in_use = &host_domain($lonhost_in_use);
1219: $result = &spares_for_offload($dom_in_use,$lonhost_in_use);
1220: if (ref($result) ne 'HASH') {
1221: $result = \%spareid;
1222: }
1223: }
1224: return $result;
1225: }
1226:
1227: sub spares_for_offload {
1228: my ($dom_in_use,$lonhost_in_use) = @_;
1229: my ($result,$cached)=&is_cached_new('spares',$dom_in_use);
1230: if (defined($cached)) {
1231: return $result;
1232: } else {
1233: my $cachetime = 60*60*24;
1234: my %domconfig =
1235: &Apache::lonnet::get_dom('configuration',['usersessions'],$dom_in_use);
1236: if (ref($domconfig{'usersessions'}) eq 'HASH') {
1237: if (ref($domconfig{'usersessions'}{'spares'}) eq 'HASH') {
1238: if (ref($domconfig{'usersessions'}{'spares'}{$lonhost_in_use}) eq 'HASH') {
1239: return &do_cache_new('spares',$dom_in_use,$domconfig{'usersessions'}{'spares'}{$lonhost_in_use},$cachetime);
1240: }
1241: }
1242: }
1243: }
1244: return;
1245: }
1246:
1247: sub get_lonbalancer_config {
1248: my ($servers) = @_;
1249: my ($currbalancer,$currtargets);
1250: if (ref($servers) eq 'HASH') {
1251: foreach my $server (keys(%{$servers})) {
1252: my %what = (
1253: spareid => 1,
1254: perlvar => 1,
1255: );
1256: my ($result,$returnhash) = &get_remote_globals($server,\%what);
1257: if ($result eq 'ok') {
1258: if (ref($returnhash) eq 'HASH') {
1259: if (ref($returnhash->{'perlvar'}) eq 'HASH') {
1260: if ($returnhash->{'perlvar'}->{'lonBalancer'} eq 'yes') {
1261: $currbalancer = $server;
1262: $currtargets = {};
1263: if (ref($returnhash->{'spareid'}) eq 'HASH') {
1264: if (ref($returnhash->{'spareid'}->{'primary'}) eq 'ARRAY') {
1265: $currtargets->{'primary'} = $returnhash->{'spareid'}->{'primary'};
1266: }
1267: if (ref($returnhash->{'spareid'}->{'default'}) eq 'ARRAY') {
1268: $currtargets->{'default'} = $returnhash->{'spareid'}->{'default'};
1269: }
1270: }
1271: last;
1272: }
1273: }
1274: }
1275: }
1276: }
1277: }
1278: return ($currbalancer,$currtargets);
1279: }
1280:
1281: sub check_loadbalancing {
1282: my ($uname,$udom) = @_;
1283: my ($is_balancer,$currtargets,$currrules,$dom_in_use,$homeintdom,
1284: $rule_in_effect,$offloadto,$otherserver);
1285: my $lonhost = $perlvar{'lonHostID'};
1286: my @hosts = ¤t_machine_ids();
1287: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
1288: my $uintdom = &Apache::lonnet::internet_dom($uprimary_id);
1289: my $intdom = &Apache::lonnet::internet_dom($lonhost);
1290: my $serverhomedom = &host_domain($lonhost);
1291: my $domneedscache;
1292: my $cachetime = 60*60*24;
1293:
1294: if (($uintdom ne '') && ($uintdom eq $intdom)) {
1295: $dom_in_use = $udom;
1296: $homeintdom = 1;
1297: } else {
1298: $dom_in_use = $serverhomedom;
1299: }
1300: my ($result,$cached)=&is_cached_new('loadbalancing',$dom_in_use);
1301: unless (defined($cached)) {
1302: my %domconfig =
1303: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
1304: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1305: $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
1306: } else {
1307: $domneedscache = $dom_in_use;
1308: }
1309: }
1310: if (ref($result) eq 'HASH') {
1311: ($is_balancer,$currtargets,$currrules) =
1312: &check_balancer_result($result,@hosts);
1313: if ($is_balancer) {
1314: if (ref($currrules) eq 'HASH') {
1315: if ($homeintdom) {
1316: if ($uname ne '') {
1317: if (($currrules->{'_LC_adv'} ne '') || ($currrules->{'_LC_author'} ne '')) {
1318: my ($is_adv,$is_author) = &is_advanced_user($udom,$uname);
1319: if (($currrules->{'_LC_author'} ne '') && ($is_author)) {
1320: $rule_in_effect = $currrules->{'_LC_author'};
1321: } elsif (($currrules->{'_LC_adv'} ne '') && ($is_adv)) {
1322: $rule_in_effect = $currrules->{'_LC_adv'}
1323: }
1324: }
1325: if ($rule_in_effect eq '') {
1326: my %userenv = &userenvironment($udom,$uname,'inststatus');
1327: if ($userenv{'inststatus'} ne '') {
1328: my @statuses = map { &unescape($_); } split(/:/,$userenv{'inststatus'});
1329: my ($othertitle,$usertypes,$types) =
1330: &Apache::loncommon::sorted_inst_types($udom);
1331: if (ref($types) eq 'ARRAY') {
1332: foreach my $type (@{$types}) {
1333: if (grep(/^\Q$type\E$/,@statuses)) {
1334: if (exists($currrules->{$type})) {
1335: $rule_in_effect = $currrules->{$type};
1336: }
1337: }
1338: }
1339: }
1340: } else {
1341: if (exists($currrules->{'default'})) {
1342: $rule_in_effect = $currrules->{'default'};
1343: }
1344: }
1345: }
1346: } else {
1347: if (exists($currrules->{'default'})) {
1348: $rule_in_effect = $currrules->{'default'};
1349: }
1350: }
1351: } else {
1352: if ($currrules->{'_LC_external'} ne '') {
1353: $rule_in_effect = $currrules->{'_LC_external'};
1354: }
1355: }
1356: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1357: $uname,$udom);
1358: }
1359: }
1360: } elsif (($homeintdom) && ($udom ne $serverhomedom)) {
1361: ($result,$cached)=&is_cached_new('loadbalancing',$serverhomedom);
1362: unless (defined($cached)) {
1363: my %domconfig =
1364: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
1365: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1366: $result = &do_cache_new('loadbalancing',$serverhomedom,$domconfig{'loadbalancing'},$cachetime);
1367: } else {
1368: $domneedscache = $serverhomedom;
1369: }
1370: }
1371: if (ref($result) eq 'HASH') {
1372: ($is_balancer,$currtargets,$currrules) =
1373: &check_balancer_result($result,@hosts);
1374: if ($is_balancer) {
1375: if (ref($currrules) eq 'HASH') {
1376: if ($currrules->{'_LC_internetdom'} ne '') {
1377: $rule_in_effect = $currrules->{'_LC_internetdom'};
1378: }
1379: }
1380: $offloadto = &get_loadbalancer_targets($rule_in_effect,$currtargets,
1381: $uname,$udom);
1382: }
1383: } else {
1384: if ($perlvar{'lonBalancer'} eq 'yes') {
1385: $is_balancer = 1;
1386: $offloadto = &this_host_spares($dom_in_use);
1387: }
1388: unless (defined($cached)) {
1389: $domneedscache = $serverhomedom;
1390: }
1391: }
1392: } else {
1393: if ($perlvar{'lonBalancer'} eq 'yes') {
1394: $is_balancer = 1;
1395: $offloadto = &this_host_spares($dom_in_use);
1396: }
1397: unless (defined($cached)) {
1398: $domneedscache = $serverhomedom;
1399: }
1400: }
1401: if ($domneedscache) {
1402: &do_cache_new('loadbalancing',$domneedscache,$is_balancer,$cachetime);
1403: }
1404: if ($is_balancer) {
1405: my $lowest_load = 30000;
1406: if (ref($offloadto) eq 'HASH') {
1407: if (ref($offloadto->{'primary'}) eq 'ARRAY') {
1408: foreach my $try_server (@{$offloadto->{'primary'}}) {
1409: ($otherserver,$lowest_load) =
1410: &compare_server_load($try_server,$otherserver,$lowest_load);
1411: }
1412: }
1413: my $found_server = ($otherserver ne '' && $lowest_load < 100);
1414:
1415: if (!$found_server) {
1416: if (ref($offloadto->{'default'}) eq 'ARRAY') {
1417: foreach my $try_server (@{$offloadto->{'default'}}) {
1418: ($otherserver,$lowest_load) =
1419: &compare_server_load($try_server,$otherserver,$lowest_load);
1420: }
1421: }
1422: }
1423: } elsif (ref($offloadto) eq 'ARRAY') {
1424: if (@{$offloadto} == 1) {
1425: $otherserver = $offloadto->[0];
1426: } elsif (@{$offloadto} > 1) {
1427: foreach my $try_server (@{$offloadto}) {
1428: ($otherserver,$lowest_load) =
1429: &compare_server_load($try_server,$otherserver,$lowest_load);
1430: }
1431: }
1432: }
1433: if (($otherserver ne '') && (grep(/^\Q$otherserver\E$/,@hosts))) {
1434: $is_balancer = 0;
1435: if ($uname ne '' && $udom ne '') {
1436: if (($env{'user.name'} eq $uname) && ($env{'user.domain'} eq $udom)) {
1437:
1438: &appenv({'user.loadbalexempt' => $lonhost,
1439: 'user.loadbalcheck.time' => time});
1440: }
1441: }
1442: }
1443: }
1444: return ($is_balancer,$otherserver);
1445: }
1446:
1447: sub check_balancer_result {
1448: my ($result,@hosts) = @_;
1449: my ($is_balancer,$currtargets,$currrules);
1450: if (ref($result) eq 'HASH') {
1451: if ($result->{'lonhost'} ne '') {
1452: my $currbalancer = $result->{'lonhost'};
1453: if (grep(/^\Q$currbalancer\E$/,@hosts)) {
1454: $is_balancer = 1;
1455: $currtargets = $result->{'targets'};
1456: $currrules = $result->{'rules'};
1457: }
1458: } else {
1459: foreach my $key (keys(%{$result})) {
1460: if (($key ne '') && (grep(/^\Q$key\E$/,@hosts)) &&
1461: (ref($result->{$key}) eq 'HASH')) {
1462: $is_balancer = 1;
1463: $currrules = $result->{$key}{'rules'};
1464: $currtargets = $result->{$key}{'targets'};
1465: last;
1466: }
1467: }
1468: }
1469: }
1470: return ($is_balancer,$currtargets,$currrules);
1471: }
1472:
1473: sub get_loadbalancer_targets {
1474: my ($rule_in_effect,$currtargets,$uname,$udom) = @_;
1475: my $offloadto;
1476: if ($rule_in_effect eq 'none') {
1477: return [$perlvar{'lonHostID'}];
1478: } elsif ($rule_in_effect eq '') {
1479: $offloadto = $currtargets;
1480: } else {
1481: if ($rule_in_effect eq 'homeserver') {
1482: my $homeserver = &homeserver($uname,$udom);
1483: if ($homeserver ne 'no_host') {
1484: $offloadto = [$homeserver];
1485: }
1486: } elsif ($rule_in_effect eq 'externalbalancer') {
1487: my %domconfig =
1488: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$udom);
1489: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
1490: if ($domconfig{'loadbalancing'}{'lonhost'} ne '') {
1491: if (&hostname($domconfig{'loadbalancing'}{'lonhost'}) ne '') {
1492: $offloadto = [$domconfig{'loadbalancing'}{'lonhost'}];
1493: }
1494: }
1495: } else {
1496: my %servers = &internet_dom_servers($udom);
1497: my ($remotebalancer,$remotetargets) = &get_lonbalancer_config(\%servers);
1498: if (&hostname($remotebalancer) ne '') {
1499: $offloadto = [$remotebalancer];
1500: }
1501: }
1502: } elsif (&hostname($rule_in_effect) ne '') {
1503: $offloadto = [$rule_in_effect];
1504: }
1505: }
1506: return $offloadto;
1507: }
1508:
1509: sub internet_dom_servers {
1510: my ($dom) = @_;
1511: my (%uniqservers,%servers);
1512: my $primaryserver = &hostname(&domain($dom,'primary'));
1513: my @machinedoms = &machine_domains($primaryserver);
1514: foreach my $mdom (@machinedoms) {
1515: my %currservers = %servers;
1516: my %server = &get_servers($mdom);
1517: %servers = (%currservers,%server);
1518: }
1519: my %by_hostname;
1520: foreach my $id (keys(%servers)) {
1521: push(@{$by_hostname{$servers{$id}}},$id);
1522: }
1523: foreach my $hostname (sort(keys(%by_hostname))) {
1524: if (@{$by_hostname{$hostname}} > 1) {
1525: my $match = 0;
1526: foreach my $id (@{$by_hostname{$hostname}}) {
1527: if (&host_domain($id) eq $dom) {
1528: $uniqservers{$id} = $hostname;
1529: $match = 1;
1530: }
1531: }
1532: unless ($match) {
1533: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1534: }
1535: } else {
1536: $uniqservers{$by_hostname{$hostname}[0]} = $hostname;
1537: }
1538: }
1539: return %uniqservers;
1540: }
1541:
1542: # ---------------------- Find the homebase for a user from domain's lib servers
1543:
1544: my %homecache;
1545: sub homeserver {
1546: my ($uname,$udom,$ignoreBadCache)=@_;
1547: my $index="$uname:$udom";
1548:
1549: if (exists($homecache{$index})) { return $homecache{$index}; }
1550:
1551: my %servers = &get_servers($udom,'library');
1552: foreach my $tryserver (keys(%servers)) {
1553: next if ($ignoreBadCache ne 'true' &&
1554: exists($badServerCache{$tryserver}));
1555:
1556: my $answer=reply("home:$udom:$uname",$tryserver);
1557: if ($answer eq 'found') {
1558: delete($badServerCache{$tryserver});
1559: return $homecache{$index}=$tryserver;
1560: } elsif ($answer eq 'no_host') {
1561: $badServerCache{$tryserver}=1;
1562: }
1563: }
1564: return 'no_host';
1565: }
1566:
1567: # ----- Find the usernames behind a list of student/employee IDs or clicker IDs
1568:
1569: sub idget {
1570: my ($udom,$idsref,$namespace)=@_;
1571: my %returnhash=();
1572: my @ids=();
1573: if (ref($idsref) eq 'ARRAY') {
1574: @ids = @{$idsref};
1575: } else {
1576: return %returnhash;
1577: }
1578: if ($namespace eq '') {
1579: $namespace = 'ids';
1580: }
1581:
1582: my %servers = &get_servers($udom,'library');
1583: foreach my $tryserver (keys(%servers)) {
1584: my $idlist=join('&', map { &escape($_); } @ids);
1585: if ($namespace eq 'ids') {
1586: $idlist=~tr/A-Z/a-z/;
1587: }
1588: my $reply;
1589: if ($namespace eq 'ids') {
1590: $reply=&reply("idget:$udom:".$idlist,$tryserver);
1591: } else {
1592: $reply=&reply("getdom:$udom:$namespace:$idlist",$tryserver);
1593: }
1594: my @answer=();
1595: if (($reply ne 'con_lost') && ($reply!~/^error\:/)) {
1596: @answer=split(/\&/,$reply);
1597: } ;
1598: my $i;
1599: for ($i=0;$i<=$#ids;$i++) {
1600: if ($answer[$i]) {
1601: $returnhash{$ids[$i]}=&unescape($answer[$i]);
1602: }
1603: }
1604: }
1605: return %returnhash;
1606: }
1607:
1608: # ------------------------------------- Find the IDs behind a list of usernames
1609:
1610: sub idrget {
1611: my ($udom,@unames)=@_;
1612: my %returnhash=();
1613: foreach my $uname (@unames) {
1614: $returnhash{$uname}=(&userenvironment($udom,$uname,'id'))[1];
1615: }
1616: return %returnhash;
1617: }
1618:
1619: # Store away a list of names and associated student/employee IDs or clicker IDs
1620:
1621: sub idput {
1622: my ($udom,$idsref,$uhom,$namespace)=@_;
1623: my %servers=();
1624: my %ids=();
1625: my %byid = ();
1626: if (ref($idsref) eq 'HASH') {
1627: %ids=%{$idsref};
1628: }
1629: if ($namespace eq '') {
1630: $namespace = 'ids';
1631: }
1632: foreach my $uname (keys(%ids)) {
1633: &cput('environment',{'id'=>$ids{$uname}},$udom,$uname);
1634: if ($uhom eq '') {
1635: $uhom=&homeserver($uname,$udom);
1636: }
1637: if ($uhom ne 'no_host') {
1638: my $esc_unam=&escape($uname);
1639: if ($namespace eq 'ids') {
1640: my $id=&escape($ids{$uname});
1641: $id=~tr/A-Z/a-z/;
1642: my $esc_unam=&escape($uname);
1643: $servers{$uhom}.=$id.'='.$esc_unam.'&';
1644: } else {
1645: my @currids = split(/,/,$ids{$uname});
1646: foreach my $id (@currids) {
1647: $byid{$uhom}{$id} .= $uname.',';
1648: }
1649: }
1650: }
1651: }
1652: if ($namespace eq 'clickers') {
1653: foreach my $server (keys(%byid)) {
1654: if (ref($byid{$server}) eq 'HASH') {
1655: foreach my $id (keys(%{$byid{$server}})) {
1656: $byid{$server} =~ s/,$//;
1657: $servers{$uhom}.=&escape($id).'='.&escape($byid{$server}).'&';
1658: }
1659: }
1660: }
1661: }
1662: foreach my $server (keys(%servers)) {
1663: $servers{$server} =~ s/\&$//;
1664: if ($namespace eq 'ids') {
1665: &critical('idput:'.$udom.':'.$servers{$server},$server);
1666: } else {
1667: &critical('updateclickers:'.$udom.':add:'.$servers{$server},$server);
1668: }
1669: }
1670: }
1671:
1672: # ------------- Delete unwanted student/employee IDs or clicker IDs from domain
1673:
1674: sub iddel {
1675: my ($udom,$idshashref,$uhome,$namespace)=@_;
1676: my %result=();
1677: my %ids=();
1678: my %byid = ();
1679: if (ref($idshashref) eq 'HASH') {
1680: %ids=%{$idshashref};
1681: } else {
1682: return %result;
1683: }
1684: if ($namespace eq '') {
1685: $namespace = 'ids';
1686: }
1687: my %servers=();
1688: while (my ($id,$unamestr) = each(%ids)) {
1689: if ($namespace eq 'ids') {
1690: my $uhom = $uhome;
1691: if ($uhom eq '') {
1692: $uhom=&homeserver($unamestr,$udom);
1693: }
1694: if ($uhom ne 'no_host') {
1695: $servers{$uhom}.='&'.&escape($id);
1696: }
1697: } else {
1698: my @curritems = split(/,/,$ids{$id});
1699: foreach my $uname (@curritems) {
1700: my $uhom = $uhome;
1701: if ($uhom eq '') {
1702: $uhom=&homeserver($uname,$udom);
1703: }
1704: if ($uhom ne 'no_host') {
1705: $byid{$uhom}{$id} .= $uname.',';
1706: }
1707: }
1708: }
1709: }
1710: if ($namespace eq 'clickers') {
1711: foreach my $server (keys(%byid)) {
1712: if (ref($byid{$server}) eq 'HASH') {
1713: foreach my $id (keys(%{$byid{$server}})) {
1714: $byid{$server}{$id} =~ s/,$//;
1715: $servers{$server}.=&escape($id).'='.&escape($byid{$server}{$id}).'&';
1716: }
1717: }
1718: }
1719: }
1720: foreach my $server (keys(%servers)) {
1721: $servers{$server} =~ s/\&$//;
1722: if ($namespace eq 'ids') {
1723: $result{$server} = &critical('iddel:'.$udom.':'.$servers{$server},$uhome);
1724: } elsif ($namespace eq 'clickers') {
1725: $result{$server} = &critical('updateclickers:'.$udom.':del:'.$servers{$server},$server);
1726: }
1727: }
1728: return %result;
1729: }
1730:
1731: # ----- Update clicker ID-to-username look-ups in clickers.db on library server
1732:
1733: sub updateclickers {
1734: my ($udom,$action,$idshashref,$uhome,$critical) = @_;
1735: my %clickers;
1736: if (ref($idshashref) eq 'HASH') {
1737: %clickers=%{$idshashref};
1738: } else {
1739: return;
1740: }
1741: my $items='';
1742: foreach my $item (keys(%clickers)) {
1743: $items.=&escape($item).'='.&escape($clickers{$item}).'&';
1744: }
1745: $items=~s/\&$//;
1746: my $request = "updateclickers:$udom:$action:$items";
1747: if ($critical) {
1748: return &critical($request,$uhome);
1749: } else {
1750: return &reply($request,$uhome);
1751: }
1752: }
1753:
1754: # ------------------------------dump from db file owned by domainconfig user
1755: sub dump_dom {
1756: my ($namespace, $udom, $regexp) = @_;
1757:
1758: $udom ||= $env{'user.domain'};
1759:
1760: return () unless $udom;
1761:
1762: return &dump($namespace, $udom, &get_domainconfiguser($udom), $regexp);
1763: }
1764:
1765: # ------------------------------------------ get items from domain db files
1766:
1767: sub get_dom {
1768: my ($namespace,$storearr,$udom,$uhome)=@_;
1769: return if ($udom eq 'public');
1770: my $items='';
1771: foreach my $item (@$storearr) {
1772: $items.=&escape($item).'&';
1773: }
1774: $items=~s/\&$//;
1775: if (!$udom) {
1776: $udom=$env{'user.domain'};
1777: return if ($udom eq 'public');
1778: if (defined(&domain($udom,'primary'))) {
1779: $uhome=&domain($udom,'primary');
1780: } else {
1781: undef($uhome);
1782: }
1783: } else {
1784: if (!$uhome) {
1785: if (defined(&domain($udom,'primary'))) {
1786: $uhome=&domain($udom,'primary');
1787: }
1788: }
1789: }
1790: if ($udom && $uhome && ($uhome ne 'no_host')) {
1791: my $rep=&reply("getdom:$udom:$namespace:$items",$uhome);
1792: my %returnhash;
1793: if ($rep eq '' || $rep =~ /^error: 2 /) {
1794: return %returnhash;
1795: }
1796: my @pairs=split(/\&/,$rep);
1797: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
1798: return @pairs;
1799: }
1800: my $i=0;
1801: foreach my $item (@$storearr) {
1802: $returnhash{$item}=&thaw_unescape($pairs[$i]);
1803: $i++;
1804: }
1805: return %returnhash;
1806: } else {
1807: &logthis("get_dom failed - no homeserver and/or domain ($udom) ($uhome)");
1808: }
1809: }
1810:
1811: # -------------------------------------------- put items in domain db files
1812:
1813: sub put_dom {
1814: my ($namespace,$storehash,$udom,$uhome)=@_;
1815: if (!$udom) {
1816: $udom=$env{'user.domain'};
1817: if (defined(&domain($udom,'primary'))) {
1818: $uhome=&domain($udom,'primary');
1819: } else {
1820: undef($uhome);
1821: }
1822: } else {
1823: if (!$uhome) {
1824: if (defined(&domain($udom,'primary'))) {
1825: $uhome=&domain($udom,'primary');
1826: }
1827: }
1828: }
1829: if ($udom && $uhome && ($uhome ne 'no_host')) {
1830: my $items='';
1831: foreach my $item (keys(%$storehash)) {
1832: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
1833: }
1834: $items=~s/\&$//;
1835: return &reply("putdom:$udom:$namespace:$items",$uhome);
1836: } else {
1837: &logthis("put_dom failed - no homeserver and/or domain");
1838: }
1839: }
1840:
1841: # --------------------- newput for items in db file owned by domainconfig user
1842: sub newput_dom {
1843: my ($namespace,$storehash,$udom) = @_;
1844: my $result;
1845: if (!$udom) {
1846: $udom=$env{'user.domain'};
1847: }
1848: if ($udom) {
1849: my $uname = &get_domainconfiguser($udom);
1850: $result = &newput($namespace,$storehash,$udom,$uname);
1851: }
1852: return $result;
1853: }
1854:
1855: # --------------------- delete for items in db file owned by domainconfig user
1856: sub del_dom {
1857: my ($namespace,$storearr,$udom)=@_;
1858: if (ref($storearr) eq 'ARRAY') {
1859: if (!$udom) {
1860: $udom=$env{'user.domain'};
1861: }
1862: if ($udom) {
1863: my $uname = &get_domainconfiguser($udom);
1864: return &del($namespace,$storearr,$udom,$uname);
1865: }
1866: }
1867: }
1868:
1869: # ----------------------------------construct domainconfig user for a domain
1870: sub get_domainconfiguser {
1871: my ($udom) = @_;
1872: return $udom.'-domainconfig';
1873: }
1874:
1875: sub retrieve_inst_usertypes {
1876: my ($udom) = @_;
1877: my (%returnhash,@order);
1878: my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
1879: if ((ref($domdefs{'inststatustypes'}) eq 'HASH') &&
1880: (ref($domdefs{'inststatusorder'}) eq 'ARRAY')) {
1881: return ($domdefs{'inststatustypes'},$domdefs{'inststatusorder'});
1882: } else {
1883: if (defined(&domain($udom,'primary'))) {
1884: my $uhome=&domain($udom,'primary');
1885: my $rep=&reply("inst_usertypes:$udom",$uhome);
1886: if ($rep =~ /^(con_lost|error|no_such_host|refused)/) {
1887: &logthis("retrieve_inst_usertypes failed - $rep returned from $uhome in domain: $udom");
1888: return (\%returnhash,\@order);
1889: }
1890: my ($hashitems,$orderitems) = split(/:/,$rep);
1891: my @pairs=split(/\&/,$hashitems);
1892: foreach my $item (@pairs) {
1893: my ($key,$value)=split(/=/,$item,2);
1894: $key = &unescape($key);
1895: next if ($key =~ /^error: 2 /);
1896: $returnhash{$key}=&thaw_unescape($value);
1897: }
1898: my @esc_order = split(/\&/,$orderitems);
1899: foreach my $item (@esc_order) {
1900: push(@order,&unescape($item));
1901: }
1902: } else {
1903: &logthis("retrieve_inst_usertypes failed - no primary domain server for $udom");
1904: }
1905: return (\%returnhash,\@order);
1906: }
1907: }
1908:
1909: sub is_domainimage {
1910: my ($url) = @_;
1911: if ($url=~m-^/+res/+($match_domain)/+\1\-domainconfig/+(img|logo|domlogo)/+[^/]-) {
1912: if (&domain($1) ne '') {
1913: return '1';
1914: }
1915: }
1916: return;
1917: }
1918:
1919: sub inst_directory_query {
1920: my ($srch) = @_;
1921: my $udom = $srch->{'srchdomain'};
1922: my %results;
1923: my $homeserver = &domain($udom,'primary');
1924: my $outcome;
1925: if ($homeserver ne '') {
1926: my $queryid=&reply("querysend:instdirsearch:".
1927: &escape($srch->{'srchby'}).':'.
1928: &escape($srch->{'srchterm'}).':'.
1929: &escape($srch->{'srchtype'}),$homeserver);
1930: my $host=&hostname($homeserver);
1931: if ($queryid !~/^\Q$host\E\_/) {
1932: &logthis('instituional directory search invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
1933: return;
1934: }
1935: my $response = &get_query_reply($queryid);
1936: my $maxtries = 5;
1937: my $tries = 1;
1938: while (($response=~/^timeout/) && ($tries < $maxtries)) {
1939: $response = &get_query_reply($queryid);
1940: $tries ++;
1941: }
1942:
1943: if (!&error($response) && $response ne 'refused') {
1944: if ($response eq 'unavailable') {
1945: $outcome = $response;
1946: } else {
1947: $outcome = 'ok';
1948: my @matches = split(/\n/,$response);
1949: foreach my $match (@matches) {
1950: my ($key,$value) = split(/=/,$match);
1951: $results{&unescape($key).':'.$udom} = &thaw_unescape($value);
1952: }
1953: }
1954: }
1955: }
1956: return ($outcome,%results);
1957: }
1958:
1959: sub usersearch {
1960: my ($srch) = @_;
1961: my $dom = $srch->{'srchdomain'};
1962: my %results;
1963: my %libserv = &all_library();
1964: my $query = 'usersearch';
1965: foreach my $tryserver (keys(%libserv)) {
1966: if (&host_domain($tryserver) eq $dom) {
1967: my $host=&hostname($tryserver);
1968: my $queryid=
1969: &reply("querysend:".&escape($query).':'.
1970: &escape($srch->{'srchby'}).':'.
1971: &escape($srch->{'srchtype'}).':'.
1972: &escape($srch->{'srchterm'}),$tryserver);
1973: if ($queryid !~/^\Q$host\E\_/) {
1974: &logthis('usersearch: invalid queryid: '.$queryid.' for host: '.$host.'in domain '.$dom.' and server: '.$tryserver);
1975: next;
1976: }
1977: my $reply = &get_query_reply($queryid);
1978: my $maxtries = 1;
1979: my $tries = 1;
1980: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
1981: $reply = &get_query_reply($queryid);
1982: $tries ++;
1983: }
1984: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
1985: &logthis('usersrch error: '.$reply.' for '.$dom.' - searching for : '.$srch->{'srchterm'}.' by '.$srch->{'srchby'}.' ('.$srch->{'srchtype'}.') - maxtries: '.$maxtries.' tries: '.$tries);
1986: } else {
1987: my @matches;
1988: if ($reply =~ /\n/) {
1989: @matches = split(/\n/,$reply);
1990: } else {
1991: @matches = split(/\&/,$reply);
1992: }
1993: foreach my $match (@matches) {
1994: my ($uname,$udom,%userhash);
1995: foreach my $entry (split(/:/,$match)) {
1996: my ($key,$value) =
1997: map {&unescape($_);} split(/=/,$entry);
1998: $userhash{$key} = $value;
1999: if ($key eq 'username') {
2000: $uname = $value;
2001: } elsif ($key eq 'domain') {
2002: $udom = $value;
2003: }
2004: }
2005: $results{$uname.':'.$udom} = \%userhash;
2006: }
2007: }
2008: }
2009: }
2010: return %results;
2011: }
2012:
2013: sub get_instuser {
2014: my ($udom,$uname,$id) = @_;
2015: my $homeserver = &domain($udom,'primary');
2016: my ($outcome,%results);
2017: if ($homeserver ne '') {
2018: my $queryid=&reply("querysend:getinstuser:".&escape($uname).':'.
2019: &escape($id).':'.&escape($udom),$homeserver);
2020: my $host=&hostname($homeserver);
2021: if ($queryid !~/^\Q$host\E\_/) {
2022: &logthis('get_instuser invalid queryid: '.$queryid.' for host: '.$homeserver.'in domain '.$udom);
2023: return;
2024: }
2025: my $response = &get_query_reply($queryid);
2026: my $maxtries = 5;
2027: my $tries = 1;
2028: while (($response=~/^timeout/) && ($tries < $maxtries)) {
2029: $response = &get_query_reply($queryid);
2030: $tries ++;
2031: }
2032: if (!&error($response) && $response ne 'refused') {
2033: if ($response eq 'unavailable') {
2034: $outcome = $response;
2035: } else {
2036: $outcome = 'ok';
2037: my @matches = split(/\n/,$response);
2038: foreach my $match (@matches) {
2039: my ($key,$value) = split(/=/,$match);
2040: $results{&unescape($key)} = &thaw_unescape($value);
2041: }
2042: }
2043: }
2044: }
2045: my %userinfo;
2046: if (ref($results{$uname}) eq 'HASH') {
2047: %userinfo = %{$results{$uname}};
2048: }
2049: return ($outcome,%userinfo);
2050: }
2051:
2052: sub get_multiple_instusers {
2053: my ($udom,$users,$caller) = @_;
2054: my ($outcome,$results);
2055: if (ref($users) eq 'HASH') {
2056: my $count = keys(%{$users});
2057: my $requested = &freeze_escape($users);
2058: my $homeserver = &domain($udom,'primary');
2059: if ($homeserver ne '') {
2060: my $queryid=&reply('querysend:getmultinstusers:::'.$caller.'='.$requested,$homeserver);
2061: my $host=&hostname($homeserver);
2062: if ($queryid !~/^\Q$host\E\_/) {
2063: &logthis('get_multiple_instusers invalid queryid: '.$queryid.
2064: ' for host: '.$homeserver.'in domain '.$udom);
2065: return ($outcome,$results);
2066: }
2067: my $response = &get_query_reply($queryid);
2068: my $maxtries = 5;
2069: if ($count > 100) {
2070: $maxtries = 1+int($count/20);
2071: }
2072: my $tries = 1;
2073: while (($response=~/^timeout/) && ($tries <= $maxtries)) {
2074: $response = &get_query_reply($queryid);
2075: $tries ++;
2076: }
2077: if ($response eq '') {
2078: $results = {};
2079: foreach my $key (keys(%{$users})) {
2080: my ($uname,$id);
2081: if ($caller eq 'id') {
2082: $id = $key;
2083: } else {
2084: $uname = $key;
2085: }
2086: my ($resp,%info) = &get_instuser($udom,$uname,$id);
2087: $outcome = $resp;
2088: if ($resp eq 'ok') {
2089: %{$results} = (%{$results}, %info);
2090: } else {
2091: last;
2092: }
2093: }
2094: } elsif(!&error($response) && ($response ne 'refused')) {
2095: if (($response eq 'unavailable') || ($response eq 'invalid') || ($response eq 'timeout')) {
2096: $outcome = $response;
2097: } else {
2098: ($outcome,my $userdata) = split(/=/,$response,2);
2099: if ($outcome eq 'ok') {
2100: $results = &thaw_unescape($userdata);
2101: }
2102: }
2103: }
2104: }
2105: }
2106: return ($outcome,$results);
2107: }
2108:
2109: sub inst_rulecheck {
2110: my ($udom,$uname,$id,$item,$rules) = @_;
2111: my %returnhash;
2112: if ($udom ne '') {
2113: if (ref($rules) eq 'ARRAY') {
2114: @{$rules} = map {&escape($_);} (@{$rules});
2115: my $rulestr = join(':',@{$rules});
2116: my $homeserver=&domain($udom,'primary');
2117: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2118: my $response;
2119: if ($item eq 'username') {
2120: $response=&unescape(&reply('instrulecheck:'.&escape($udom).
2121: ':'.&escape($uname).':'.$rulestr,
2122: $homeserver));
2123: } elsif ($item eq 'id') {
2124: $response=&unescape(&reply('instidrulecheck:'.&escape($udom).
2125: ':'.&escape($id).':'.$rulestr,
2126: $homeserver));
2127: } elsif ($item eq 'selfcreate') {
2128: $response=&unescape(&reply('instselfcreatecheck:'.
2129: &escape($udom).':'.&escape($uname).
2130: ':'.$rulestr,$homeserver));
2131: }
2132: if ($response ne 'refused') {
2133: my @pairs=split(/\&/,$response);
2134: foreach my $item (@pairs) {
2135: my ($key,$value)=split(/=/,$item,2);
2136: $key = &unescape($key);
2137: next if ($key =~ /^error: 2 /);
2138: $returnhash{$key}=&thaw_unescape($value);
2139: }
2140: }
2141: }
2142: }
2143: }
2144: return %returnhash;
2145: }
2146:
2147: sub inst_userrules {
2148: my ($udom,$check) = @_;
2149: my (%ruleshash,@ruleorder);
2150: if ($udom ne '') {
2151: my $homeserver=&domain($udom,'primary');
2152: if (($homeserver ne '') && ($homeserver ne 'no_host')) {
2153: my $response;
2154: if ($check eq 'id') {
2155: $response=&reply('instidrules:'.&escape($udom),
2156: $homeserver);
2157: } elsif ($check eq 'email') {
2158: $response=&reply('instemailrules:'.&escape($udom),
2159: $homeserver);
2160: } else {
2161: $response=&reply('instuserrules:'.&escape($udom),
2162: $homeserver);
2163: }
2164: if (($response ne 'refused') && ($response ne 'error') &&
2165: ($response ne 'unknown_cmd') &&
2166: ($response ne 'no_such_host')) {
2167: my ($hashitems,$orderitems) = split(/:/,$response);
2168: my @pairs=split(/\&/,$hashitems);
2169: foreach my $item (@pairs) {
2170: my ($key,$value)=split(/=/,$item,2);
2171: $key = &unescape($key);
2172: next if ($key =~ /^error: 2 /);
2173: $ruleshash{$key}=&thaw_unescape($value);
2174: }
2175: my @esc_order = split(/\&/,$orderitems);
2176: foreach my $item (@esc_order) {
2177: push(@ruleorder,&unescape($item));
2178: }
2179: }
2180: }
2181: }
2182: return (\%ruleshash,\@ruleorder);
2183: }
2184:
2185: # ------------- Get Authentication, Language and User Tools Defaults for Domain
2186:
2187: sub get_domain_defaults {
2188: my ($domain,$ignore_cache) = @_;
2189: return if (($domain eq '') || ($domain eq 'public'));
2190: my $cachetime = 60*60*24;
2191: unless ($ignore_cache) {
2192: my ($result,$cached)=&is_cached_new('domdefaults',$domain);
2193: if (defined($cached)) {
2194: if (ref($result) eq 'HASH') {
2195: return %{$result};
2196: }
2197: }
2198: }
2199: my %domdefaults;
2200: my %domconfig =
2201: &Apache::lonnet::get_dom('configuration',['defaults','quotas',
2202: 'requestcourses','inststatus',
2203: 'coursedefaults','usersessions',
2204: 'requestauthor','selfenrollment',
2205: 'coursecategories'],$domain);
2206: my @coursetypes = ('official','unofficial','community','textbook','placement');
2207: if (ref($domconfig{'defaults'}) eq 'HASH') {
2208: $domdefaults{'lang_def'} = $domconfig{'defaults'}{'lang_def'};
2209: $domdefaults{'auth_def'} = $domconfig{'defaults'}{'auth_def'};
2210: $domdefaults{'auth_arg_def'} = $domconfig{'defaults'}{'auth_arg_def'};
2211: $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
2212: $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
2213: $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
2214: } else {
2215: $domdefaults{'lang_def'} = &domain($domain,'lang_def');
2216: $domdefaults{'auth_def'} = &domain($domain,'auth_def');
2217: $domdefaults{'auth_arg_def'} = &domain($domain,'auth_arg_def');
2218: }
2219: if (ref($domconfig{'quotas'}) eq 'HASH') {
2220: if (ref($domconfig{'quotas'}{'defaultquota'}) eq 'HASH') {
2221: $domdefaults{'defaultquota'} = $domconfig{'quotas'}{'defaultquota'};
2222: } else {
2223: $domdefaults{'defaultquota'} = $domconfig{'quotas'};
2224: }
2225: my @usertools = ('aboutme','blog','webdav','portfolio');
2226: foreach my $item (@usertools) {
2227: if (ref($domconfig{'quotas'}{$item}) eq 'HASH') {
2228: $domdefaults{$item} = $domconfig{'quotas'}{$item};
2229: }
2230: }
2231: if (ref($domconfig{'quotas'}{'authorquota'}) eq 'HASH') {
2232: $domdefaults{'authorquota'} = $domconfig{'quotas'}{'authorquota'};
2233: }
2234: }
2235: if (ref($domconfig{'requestcourses'}) eq 'HASH') {
2236: foreach my $item ('official','unofficial','community','textbook','placement') {
2237: $domdefaults{$item} = $domconfig{'requestcourses'}{$item};
2238: }
2239: }
2240: if (ref($domconfig{'requestauthor'}) eq 'HASH') {
2241: $domdefaults{'requestauthor'} = $domconfig{'requestauthor'};
2242: }
2243: if (ref($domconfig{'inststatus'}) eq 'HASH') {
2244: foreach my $item ('inststatustypes','inststatusorder','inststatusguest') {
2245: $domdefaults{$item} = $domconfig{'inststatus'}{$item};
2246: }
2247: }
2248: if (ref($domconfig{'coursedefaults'}) eq 'HASH') {
2249: $domdefaults{'canuse_pdfforms'} = $domconfig{'coursedefaults'}{'canuse_pdfforms'};
2250: $domdefaults{'usejsme'} = $domconfig{'coursedefaults'}{'usejsme'};
2251: $domdefaults{'uselcmath'} = $domconfig{'coursedefaults'}{'uselcmath'};
2252: if (ref($domconfig{'coursedefaults'}{'postsubmit'}) eq 'HASH') {
2253: $domdefaults{'postsubmit'} = $domconfig{'coursedefaults'}{'postsubmit'}{'client'};
2254: }
2255: foreach my $type (@coursetypes) {
2256: if (ref($domconfig{'coursedefaults'}{'coursecredits'}) eq 'HASH') {
2257: unless ($type eq 'community') {
2258: $domdefaults{$type.'credits'} = $domconfig{'coursedefaults'}{'coursecredits'}{$type};
2259: }
2260: }
2261: if (ref($domconfig{'coursedefaults'}{'uploadquota'}) eq 'HASH') {
2262: $domdefaults{$type.'quota'} = $domconfig{'coursedefaults'}{'uploadquota'}{$type};
2263: }
2264: if ($domdefaults{'postsubmit'} eq 'on') {
2265: if (ref($domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}) eq 'HASH') {
2266: $domdefaults{$type.'postsubtimeout'} =
2267: $domconfig{'coursedefaults'}{'postsubmit'}{'timeout'}{$type};
2268: }
2269: }
2270: }
2271: if (ref($domconfig{'coursedefaults'}{'canclone'}) eq 'HASH') {
2272: if (ref($domconfig{'coursedefaults'}{'canclone'}{'instcode'}) eq 'ARRAY') {
2273: my @clonecodes = @{$domconfig{'coursedefaults'}{'canclone'}{'instcode'}};
2274: if (@clonecodes) {
2275: $domdefaults{'canclone'} = join('+',@clonecodes);
2276: }
2277: }
2278: } elsif ($domconfig{'coursedefaults'}{'canclone'}) {
2279: $domdefaults{'canclone'}=$domconfig{'coursedefaults'}{'canclone'};
2280: }
2281: }
2282: if (ref($domconfig{'usersessions'}) eq 'HASH') {
2283: if (ref($domconfig{'usersessions'}{'remote'}) eq 'HASH') {
2284: $domdefaults{'remotesessions'} = $domconfig{'usersessions'}{'remote'};
2285: }
2286: if (ref($domconfig{'usersessions'}{'hosted'}) eq 'HASH') {
2287: $domdefaults{'hostedsessions'} = $domconfig{'usersessions'}{'hosted'};
2288: }
2289: if (ref($domconfig{'usersessions'}{'offloadnow'}) eq 'HASH') {
2290: $domdefaults{'offloadnow'} = $domconfig{'usersessions'}{'offloadnow'};
2291: }
2292: }
2293: if (ref($domconfig{'selfenrollment'}) eq 'HASH') {
2294: if (ref($domconfig{'selfenrollment'}{'admin'}) eq 'HASH') {
2295: my @settings = ('types','registered','enroll_dates','access_dates','section',
2296: 'approval','limit');
2297: foreach my $type (@coursetypes) {
2298: if (ref($domconfig{'selfenrollment'}{'admin'}{$type}) eq 'HASH') {
2299: my @mgrdc = ();
2300: foreach my $item (@settings) {
2301: if ($domconfig{'selfenrollment'}{'admin'}{$type}{$item} eq '0') {
2302: push(@mgrdc,$item);
2303: }
2304: }
2305: if (@mgrdc) {
2306: $domdefaults{$type.'selfenrolladmdc'} = join(',',@mgrdc);
2307: }
2308: }
2309: }
2310: }
2311: if (ref($domconfig{'selfenrollment'}{'default'}) eq 'HASH') {
2312: foreach my $type (@coursetypes) {
2313: if (ref($domconfig{'selfenrollment'}{'default'}{$type}) eq 'HASH') {
2314: foreach my $item (keys(%{$domconfig{'selfenrollment'}{'default'}{$type}})) {
2315: $domdefaults{$type.'selfenroll'.$item} = $domconfig{'selfenrollment'}{'default'}{$type}{$item};
2316: }
2317: }
2318: }
2319: }
2320: }
2321: if (ref($domconfig{'coursecategories'}) eq 'HASH') {
2322: $domdefaults{'catauth'} = 'std';
2323: $domdefaults{'catunauth'} = 'std';
2324: if ($domconfig{'coursecategories'}{'auth'}) {
2325: $domdefaults{'catauth'} = $domconfig{'coursecategories'}{'auth'};
2326: }
2327: if ($domconfig{'coursecategories'}{'unauth'}) {
2328: $domdefaults{'catunauth'} = $domconfig{'coursecategories'}{'unauth'};
2329: }
2330: }
2331: &do_cache_new('domdefaults',$domain,\%domdefaults,$cachetime);
2332: return %domdefaults;
2333: }
2334:
2335: # --------------------------------------------------- Assign a key to a student
2336:
2337: sub assign_access_key {
2338: #
2339: # a valid key looks like uname:udom#comments
2340: # comments are being appended
2341: #
2342: my ($ckey,$kdom,$knum,$cdom,$cnum,$udom,$uname,$logentry)=@_;
2343: $kdom=
2344: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($kdom));
2345: $knum=
2346: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($knum));
2347: $cdom=
2348: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2349: $cnum=
2350: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2351: $udom=$env{'user.name'} unless (defined($udom));
2352: $uname=$env{'user.domain'} unless (defined($uname));
2353: my %existing=&get('accesskeys',[$ckey],$kdom,$knum);
2354: if (($existing{$ckey}=~/^\#(.*)$/) || # - new key
2355: ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#(.*)$/)) {
2356: # assigned to this person
2357: # - this should not happen,
2358: # unless something went wrong
2359: # the first time around
2360: # ready to assign
2361: $logentry=$1.'; '.$logentry;
2362: if (&put('accesskeys',{$ckey=>$uname.':'.$udom.'#'.$logentry},
2363: $kdom,$knum) eq 'ok') {
2364: # key now belongs to user
2365: my $envkey='key.'.$cdom.'_'.$cnum;
2366: if (&put('environment',{$envkey => $ckey}) eq 'ok') {
2367: &appenv({'environment.'.$envkey => $ckey});
2368: return 'ok';
2369: } else {
2370: return
2371: 'error: Count not permanently assign key, will need to be re-entered later.';
2372: }
2373: } else {
2374: return 'error: Could not assign key, try again later.';
2375: }
2376: } elsif (!$existing{$ckey}) {
2377: # the key does not exist
2378: return 'error: The key does not exist';
2379: } else {
2380: # the key is somebody else's
2381: return 'error: The key is already in use';
2382: }
2383: }
2384:
2385: # ------------------------------------------ put an additional comment on a key
2386:
2387: sub comment_access_key {
2388: #
2389: # a valid key looks like uname:udom#comments
2390: # comments are being appended
2391: #
2392: my ($ckey,$cdom,$cnum,$logentry)=@_;
2393: $cdom=
2394: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2395: $cnum=
2396: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2397: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2398: if ($existing{$ckey}) {
2399: $existing{$ckey}.='; '.$logentry;
2400: # ready to assign
2401: if (&put('accesskeys',{$ckey=>$existing{$ckey}},
2402: $cdom,$cnum) eq 'ok') {
2403: return 'ok';
2404: } else {
2405: return 'error: Count not store comment.';
2406: }
2407: } else {
2408: # the key does not exist
2409: return 'error: The key does not exist';
2410: }
2411: }
2412:
2413: # ------------------------------------------------------ Generate a set of keys
2414:
2415: sub generate_access_keys {
2416: my ($number,$cdom,$cnum,$logentry)=@_;
2417: $cdom=
2418: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2419: $cnum=
2420: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2421: unless (&allowed('mky',$cdom)) { return 0; }
2422: unless (($cdom) && ($cnum)) { return 0; }
2423: if ($number>10000) { return 0; }
2424: sleep(2); # make sure don't get same seed twice
2425: srand(time()^($$+($$<<15))); # from "Programming Perl"
2426: my $total=0;
2427: for (my $i=1;$i<=$number;$i++) {
2428: my $newkey=sprintf("%lx",int(100000*rand)).'-'.
2429: sprintf("%lx",int(100000*rand)).'-'.
2430: sprintf("%lx",int(100000*rand));
2431: $newkey=~s/1/g/g; # folks mix up 1 and l
2432: $newkey=~s/0/h/g; # and also 0 and O
2433: my %existing=&get('accesskeys',[$newkey],$cdom,$cnum);
2434: if ($existing{$newkey}) {
2435: $i--;
2436: } else {
2437: if (&put('accesskeys',
2438: { $newkey => '# generated '.localtime().
2439: ' by '.$env{'user.name'}.'@'.$env{'user.domain'}.
2440: '; '.$logentry },
2441: $cdom,$cnum) eq 'ok') {
2442: $total++;
2443: }
2444: }
2445: }
2446: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
2447: 'Generated '.$total.' keys for '.$cnum.' at '.$cdom);
2448: return $total;
2449: }
2450:
2451: # ------------------------------------------------------- Validate an accesskey
2452:
2453: sub validate_access_key {
2454: my ($ckey,$cdom,$cnum,$udom,$uname)=@_;
2455: $cdom=
2456: $env{'course.'.$env{'request.course.id'}.'.domain'} unless (defined($cdom));
2457: $cnum=
2458: $env{'course.'.$env{'request.course.id'}.'.num'} unless (defined($cnum));
2459: $udom=$env{'user.domain'} unless (defined($udom));
2460: $uname=$env{'user.name'} unless (defined($uname));
2461: my %existing=&get('accesskeys',[$ckey],$cdom,$cnum);
2462: return ($existing{$ckey}=~/^\Q$uname\E\:\Q$udom\E\#/);
2463: }
2464:
2465: # ------------------------------------- Find the section of student in a course
2466: sub devalidate_getsection_cache {
2467: my ($udom,$unam,$courseid)=@_;
2468: my $hashid="$udom:$unam:$courseid";
2469: &devalidate_cache_new('getsection',$hashid);
2470: }
2471:
2472: sub courseid_to_courseurl {
2473: my ($courseid) = @_;
2474: #already url style courseid
2475: return $courseid if ($courseid =~ m{^/});
2476:
2477: if (exists($env{'course.'.$courseid.'.num'})) {
2478: my $cnum = $env{'course.'.$courseid.'.num'};
2479: my $cdom = $env{'course.'.$courseid.'.domain'};
2480: return "/$cdom/$cnum";
2481: }
2482:
2483: my %courseinfo=&Apache::lonnet::coursedescription($courseid);
2484: if (exists($courseinfo{'num'})) {
2485: return "/$courseinfo{'domain'}/$courseinfo{'num'}";
2486: }
2487:
2488: return undef;
2489: }
2490:
2491: sub getsection {
2492: my ($udom,$unam,$courseid)=@_;
2493: my $cachetime=1800;
2494:
2495: my $hashid="$udom:$unam:$courseid";
2496: my ($result,$cached)=&is_cached_new('getsection',$hashid);
2497: if (defined($cached)) { return $result; }
2498:
2499: my %Pending;
2500: my %Expired;
2501: #
2502: # Each role can either have not started yet (pending), be active,
2503: # or have expired.
2504: #
2505: # If there is an active role, we are done.
2506: #
2507: # If there is more than one role which has not started yet,
2508: # choose the one which will start sooner
2509: # If there is one role which has not started yet, return it.
2510: #
2511: # If there is more than one expired role, choose the one which ended last.
2512: # If there is a role which has expired, return it.
2513: #
2514: $courseid = &courseid_to_courseurl($courseid);
2515: my %roleshash = &dump('roles',$udom,$unam,$courseid);
2516: foreach my $key (keys(%roleshash)) {
2517: next if ($key !~/^\Q$courseid\E(?:\/)*(\w+)*\_st$/);
2518: my $section=$1;
2519: if ($key eq $courseid.'_st') { $section=''; }
2520: my ($dummy,$end,$start)=split(/\_/,&unescape($roleshash{$key}));
2521: my $now=time;
2522: if (defined($end) && $end && ($now > $end)) {
2523: $Expired{$end}=$section;
2524: next;
2525: }
2526: if (defined($start) && $start && ($now < $start)) {
2527: $Pending{$start}=$section;
2528: next;
2529: }
2530: return &do_cache_new('getsection',$hashid,$section,$cachetime);
2531: }
2532: #
2533: # Presumedly there will be few matching roles from the above
2534: # loop and the sorting time will be negligible.
2535: if (scalar(keys(%Pending))) {
2536: my ($time) = sort {$a <=> $b} keys(%Pending);
2537: return &do_cache_new('getsection',$hashid,$Pending{$time},$cachetime);
2538: }
2539: if (scalar(keys(%Expired))) {
2540: my @sorted = sort {$a <=> $b} keys(%Expired);
2541: my $time = pop(@sorted);
2542: return &do_cache_new('getsection',$hashid,$Expired{$time},$cachetime);
2543: }
2544: return &do_cache_new('getsection',$hashid,'-1',$cachetime);
2545: }
2546:
2547: sub save_cache {
2548: &purge_remembered();
2549: #&Apache::loncommon::validate_page();
2550: undef(%env);
2551: undef($env_loaded);
2552: }
2553:
2554: my $to_remember=-1;
2555: my %remembered;
2556: my %accessed;
2557: my $kicks=0;
2558: my $hits=0;
2559: sub make_key {
2560: my ($name,$id) = @_;
2561: if (length($id) > 65
2562: && length(&escape($id)) > 200) {
2563: $id=length($id).':'.&Digest::MD5::md5_hex($id);
2564: }
2565: return &escape($name.':'.$id);
2566: }
2567:
2568: sub devalidate_cache_new {
2569: my ($name,$id,$debug) = @_;
2570: if ($debug) { &Apache::lonnet::logthis("deleting $name:$id"); }
2571: $id=&make_key($name,$id);
2572: $memcache->delete($id);
2573: delete($remembered{$id});
2574: delete($accessed{$id});
2575: }
2576:
2577: sub is_cached_new {
2578: my ($name,$id,$debug) = @_;
2579: $id=&make_key($name,$id);
2580: if (exists($remembered{$id})) {
2581: if ($debug) { &Apache::lonnet::logthis("Early return $id of $remembered{$id} "); }
2582: $accessed{$id}=[&gettimeofday()];
2583: $hits++;
2584: return ($remembered{$id},1);
2585: }
2586: my $value = $memcache->get($id);
2587: if (!(defined($value))) {
2588: if ($debug) { &Apache::lonnet::logthis("getting $id is not defined"); }
2589: return (undef,undef);
2590: }
2591: if ($value eq '__undef__') {
2592: if ($debug) { &Apache::lonnet::logthis("getting $id is __undef__"); }
2593: $value=undef;
2594: }
2595: &make_room($id,$value,$debug);
2596: if ($debug) { &Apache::lonnet::logthis("getting $id is $value"); }
2597: return ($value,1);
2598: }
2599:
2600: sub do_cache_new {
2601: my ($name,$id,$value,$time,$debug) = @_;
2602: $id=&make_key($name,$id);
2603: my $setvalue=$value;
2604: if (!defined($setvalue)) {
2605: $setvalue='__undef__';
2606: }
2607: if (!defined($time) ) {
2608: $time=600;
2609: }
2610: if ($debug) { &Apache::lonnet::logthis("Setting $id to $value"); }
2611: my $result = $memcache->set($id,$setvalue,$time);
2612: if (! $result) {
2613: &logthis("caching of id -> $id failed");
2614: $memcache->disconnect_all();
2615: }
2616: # need to make a copy of $value
2617: &make_room($id,$value,$debug);
2618: return $value;
2619: }
2620:
2621: sub make_room {
2622: my ($id,$value,$debug)=@_;
2623:
2624: $remembered{$id}= (ref($value)) ? &Storable::dclone($value)
2625: : $value;
2626: if ($to_remember<0) { return; }
2627: $accessed{$id}=[&gettimeofday()];
2628: if (scalar(keys(%remembered)) <= $to_remember) { return; }
2629: my $to_kick;
2630: my $max_time=0;
2631: foreach my $other (keys(%accessed)) {
2632: if (&tv_interval($accessed{$other}) > $max_time) {
2633: $to_kick=$other;
2634: $max_time=&tv_interval($accessed{$other});
2635: }
2636: }
2637: delete($remembered{$to_kick});
2638: delete($accessed{$to_kick});
2639: $kicks++;
2640: if ($debug) { &logthis("kicking $to_kick $max_time $kicks\n"); }
2641: return;
2642: }
2643:
2644: sub purge_remembered {
2645: #&logthis("Tossing ".scalar(keys(%remembered)));
2646: #&logthis(sprintf("%-20s is %s",'%remembered',length(&freeze(\%remembered))));
2647: undef(%remembered);
2648: undef(%accessed);
2649: }
2650: # ------------------------------------- Read an entry from a user's environment
2651:
2652: sub userenvironment {
2653: my ($udom,$unam,@what)=@_;
2654: my $items;
2655: foreach my $item (@what) {
2656: $items.=&escape($item).'&';
2657: }
2658: $items=~s/\&$//;
2659: my %returnhash=();
2660: my $uhome = &homeserver($unam,$udom);
2661: unless ($uhome eq 'no_host') {
2662: my @answer=split(/\&/,
2663: &reply('get:'.$udom.':'.$unam.':environment:'.$items,$uhome));
2664: if ($#answer==0 && $answer[0] =~ /^(con_lost|error:|no_such_host)/i) {
2665: return %returnhash;
2666: }
2667: my $i;
2668: for ($i=0;$i<=$#what;$i++) {
2669: $returnhash{$what[$i]}=&unescape($answer[$i]);
2670: }
2671: }
2672: return %returnhash;
2673: }
2674:
2675: # ---------------------------------------------------------- Get a studentphoto
2676: sub studentphoto {
2677: my ($udom,$unam,$ext) = @_;
2678: my $home=&Apache::lonnet::homeserver($unam,$udom);
2679: if (defined($env{'request.course.id'})) {
2680: if ($env{'course.'.$env{'request.course.id'}.'.internal.showphoto'}) {
2681: if ($udom eq $env{'course.'.$env{'request.course.id'}.'.domain'}) {
2682: return(&retrievestudentphoto($udom,$unam,$ext));
2683: } else {
2684: my ($result,$perm_reqd)=
2685: &Apache::lonnet::auto_photo_permission($unam,$udom);
2686: if ($result eq 'ok') {
2687: if (!($perm_reqd eq 'yes')) {
2688: return(&retrievestudentphoto($udom,$unam,$ext));
2689: }
2690: }
2691: }
2692: }
2693: } else {
2694: my ($result,$perm_reqd) =
2695: &Apache::lonnet::auto_photo_permission($unam,$udom);
2696: if ($result eq 'ok') {
2697: if (!($perm_reqd eq 'yes')) {
2698: return(&retrievestudentphoto($udom,$unam,$ext));
2699: }
2700: }
2701: }
2702: return '/adm/lonKaputt/lonlogo_broken.gif';
2703: }
2704:
2705: sub retrievestudentphoto {
2706: my ($udom,$unam,$ext,$type) = @_;
2707: my $home=&Apache::lonnet::homeserver($unam,$udom);
2708: my $ret=&Apache::lonnet::reply("studentphoto:$udom:$unam:$ext:$type",$home);
2709: if ($ret eq 'ok') {
2710: my $url="/uploaded/$udom/$unam/internal/studentphoto.$ext";
2711: if ($type eq 'thumbnail') {
2712: $url="/uploaded/$udom/$unam/internal/studentphoto_tn.$ext";
2713: }
2714: my $tokenurl=&Apache::lonnet::tokenwrapper($url);
2715: return $tokenurl;
2716: } else {
2717: if ($type eq 'thumbnail') {
2718: return '/adm/lonKaputt/genericstudent_tn.gif';
2719: } else {
2720: return '/adm/lonKaputt/lonlogo_broken.gif';
2721: }
2722: }
2723: }
2724:
2725: # -------------------------------------------------------------------- New chat
2726:
2727: sub chatsend {
2728: my ($newentry,$anon,$group)=@_;
2729: my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
2730: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
2731: my $chome=$env{'course.'.$env{'request.course.id'}.'.home'};
2732: &reply('chatsend:'.$cdom.':'.$cnum.':'.
2733: &escape($env{'user.domain'}.':'.$env{'user.name'}.':'.$anon.':'.
2734: &escape($newentry)).':'.$group,$chome);
2735: }
2736:
2737: # ------------------------------------------ Find current version of a resource
2738:
2739: sub getversion {
2740: my $fname=&clutter(shift);
2741: unless ($fname=~m{^(/adm/wrapper|)/res/}) { return -1; }
2742: return ¤tversion(&filelocation('',$fname));
2743: }
2744:
2745: sub currentversion {
2746: my $fname=shift;
2747: my $author=$fname;
2748: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2749: my ($udom,$uname)=split(/\//,$author);
2750: my $home=&homeserver($uname,$udom);
2751: if ($home eq 'no_host') {
2752: return -1;
2753: }
2754: my $answer=&reply("currentversion:$fname",$home);
2755: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2756: return -1;
2757: }
2758: return $answer;
2759: }
2760:
2761: #
2762: # Return special version number of resource if set by override, empty otherwise
2763: #
2764: sub usedversion {
2765: my $fname=shift;
2766: unless ($fname) { $fname=$env{'request.uri'}; }
2767: my ($urlversion)=($fname=~/\.(\d+)\.\w+$/);
2768: if ($urlversion) { return $urlversion; }
2769: return '';
2770: }
2771:
2772: # ----------------------------- Subscribe to a resource, return URL if possible
2773:
2774: sub subscribe {
2775: my $fname=shift;
2776: if ($fname=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) { return ''; }
2777: $fname=~s/[\n\r]//g;
2778: my $author=$fname;
2779: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2780: my ($udom,$uname)=split(/\//,$author);
2781: my $home=homeserver($uname,$udom);
2782: if ($home eq 'no_host') {
2783: return 'not_found';
2784: }
2785: my $answer=reply("sub:$fname",$home);
2786: if (($answer eq 'con_lost') || ($answer eq 'rejected')) {
2787: $answer.=' by '.$home;
2788: }
2789: return $answer;
2790: }
2791:
2792: # -------------------------------------------------------------- Replicate file
2793:
2794: sub repcopy {
2795: my $filename=shift;
2796: $filename=~s/\/+/\//g;
2797: my $londocroot = $perlvar{'lonDocRoot'};
2798: if ($filename=~m{^\Q$londocroot/adm/\E}) { return 'ok'; }
2799: if ($filename=~m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
2800: if ($filename=~m{^\Q$londocroot/userfiles/\E} or
2801: $filename=~m{^/*(uploaded|editupload)/}) {
2802: return &repcopy_userfile($filename);
2803: }
2804: $filename=~s/[\n\r]//g;
2805: my $transname="$filename.in.transfer";
2806: # FIXME: this should flock
2807: if ((-e $filename) || (-e $transname)) { return 'ok'; }
2808: my $remoteurl=subscribe($filename);
2809: if ($remoteurl =~ /^con_lost by/) {
2810: &logthis("Subscribe returned $remoteurl: $filename");
2811: return 'unavailable';
2812: } elsif ($remoteurl eq 'not_found') {
2813: #&logthis("Subscribe returned not_found: $filename");
2814: return 'not_found';
2815: } elsif ($remoteurl =~ /^rejected by/) {
2816: &logthis("Subscribe returned $remoteurl: $filename");
2817: return 'forbidden';
2818: } elsif ($remoteurl eq 'directory') {
2819: return 'ok';
2820: } else {
2821: my $author=$filename;
2822: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/;
2823: my ($udom,$uname)=split(/\//,$author);
2824: my $home=homeserver($uname,$udom);
2825: unless ($home eq $perlvar{'lonHostID'}) {
2826: my @parts=split(/\//,$filename);
2827: my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
2828: if ($path ne "$londocroot/res") {
2829: &logthis("Malconfiguration for replication: $filename");
2830: return 'bad_request';
2831: }
2832: my $count;
2833: for ($count=5;$count<$#parts;$count++) {
2834: $path.="/$parts[$count]";
2835: if ((-e $path)!=1) {
2836: mkdir($path,0777);
2837: }
2838: }
2839: my $ua=new LWP::UserAgent;
2840: my $request=new HTTP::Request('GET',"$remoteurl");
2841: my $response=$ua->request($request,$transname);
2842: if ($response->is_error()) {
2843: unlink($transname);
2844: my $message=$response->status_line;
2845: &logthis("<font color=\"blue\">WARNING:"
2846: ." LWP get: $message: $filename</font>");
2847: return 'unavailable';
2848: } else {
2849: if ($remoteurl!~/\.meta$/) {
2850: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
2851: my $mresponse=$ua->request($mrequest,$filename.'.meta');
2852: if ($mresponse->is_error()) {
2853: unlink($filename.'.meta');
2854: &logthis(
2855: "<font color=\"yellow\">INFO: No metadata: $filename</font>");
2856: }
2857: }
2858: rename($transname,$filename);
2859: return 'ok';
2860: }
2861: }
2862: }
2863: }
2864:
2865: # ------------------------------------------------ Get server side include body
2866: sub ssi_body {
2867: my ($filelink,%form)=@_;
2868: if (! exists($form{'LONCAPA_INTERNAL_no_discussion'})) {
2869: $form{'LONCAPA_INTERNAL_no_discussion'}='true';
2870: }
2871: my $output='';
2872: my $response;
2873: if ($filelink=~/^https?\:/) {
2874: ($output,$response)=&externalssi($filelink);
2875: } else {
2876: $filelink .= $filelink=~/\?/ ? '&' : '?';
2877: $filelink .= 'inhibitmenu=yes';
2878: ($output,$response)=&ssi($filelink,%form);
2879: }
2880: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
2881: $output=~s/^.*?\<body[^\>]*\>//si;
2882: $output=~s/\<\/body\s*\>.*?$//si;
2883: if (wantarray) {
2884: return ($output, $response);
2885: } else {
2886: return $output;
2887: }
2888: }
2889:
2890: # --------------------------------------------------------- Server Side Include
2891:
2892: sub absolute_url {
2893: my ($host_name) = @_;
2894: my $protocol = ($ENV{'SERVER_PORT'} == 443?'https://':'http://');
2895: if ($host_name eq '') {
2896: $host_name = $ENV{'SERVER_NAME'};
2897: }
2898: return $protocol.$host_name;
2899: }
2900:
2901: #
2902: # Server side include.
2903: # Parameters:
2904: # fn Possibly encrypted resource name/id.
2905: # form Hash that describes how the rendering should be done
2906: # and other things.
2907: # Returns:
2908: # Scalar context: The content of the response.
2909: # Array context: 2 element list of the content and the full response object.
2910: #
2911: sub ssi {
2912:
2913: my ($fn,%form)=@_;
2914: my $ua=new LWP::UserAgent;
2915: my $request;
2916:
2917: $form{'no_update_last_known'}=1;
2918: &Apache::lonenc::check_encrypt(\$fn);
2919: if (%form) {
2920: $request=new HTTP::Request('POST',&absolute_url().$fn);
2921: $request->content(join('&',map {
2922: my $name = escape($_);
2923: "$name=" . ( ref($form{$_}) eq 'ARRAY'
2924: ? join("&$name=", map {escape($_) } @{$form{$_}})
2925: : &escape($form{$_}) );
2926: } keys(%form)));
2927: } else {
2928: $request=new HTTP::Request('GET',&absolute_url().$fn);
2929: }
2930:
2931: $request->header(Cookie => $ENV{'HTTP_COOKIE'});
2932: my $response= $ua->request($request);
2933: my $content = $response->content;
2934:
2935:
2936: if (wantarray) {
2937: return ($content, $response);
2938: } else {
2939: return $content;
2940: }
2941: }
2942:
2943: sub externalssi {
2944: my ($url)=@_;
2945: my $ua=new LWP::UserAgent;
2946: my $request=new HTTP::Request('GET',$url);
2947: my $response=$ua->request($request);
2948: if (wantarray) {
2949: return ($response->content, $response);
2950: } else {
2951: return $response->content;
2952: }
2953: }
2954:
2955: # -------------------------------- Allow a /uploaded/ URI to be vouched for
2956:
2957: sub allowuploaded {
2958: my ($srcurl,$url)=@_;
2959: $url=&clutter(&declutter($url));
2960: my $dir=$url;
2961: $dir=~s/\/[^\/]+$//;
2962: my %httpref=();
2963: my $httpurl=&hreflocation('',$url);
2964: $httpref{'httpref.'.$httpurl}=$srcurl;
2965: &Apache::lonnet::appenv(\%httpref);
2966: }
2967:
2968: #
2969: # Determine if the current user should be able to edit a particular resource,
2970: # when viewing in course context.
2971: # (a) When viewing resource used to determine if "Edit" item is included in
2972: # Functions.
2973: # (b) When displaying folder contents in course editor, used to determine if
2974: # "Edit" link will be displayed alongside resource.
2975: #
2976: # input: six args -- filename (decluttered), course number, course domain,
2977: # url, symb (if registered) and group (if this is a group
2978: # item -- e.g., bulletin board, group page etc.).
2979: # output: array of five scalars --
2980: # $cfile -- url for file editing if editable on current server
2981: # $home -- homeserver of resource (i.e., for author if published,
2982: # or course if uploaded.).
2983: # $switchserver -- 1 if server switch will be needed.
2984: # $forceedit -- 1 if icon/link should be to go to edit mode
2985: # $forceview -- 1 if icon/link should be to go to view mode
2986: #
2987:
2988: sub can_edit_resource {
2989: my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
2990: my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
2991: #
2992: # For aboutme pages user can only edit his/her own.
2993: #
2994: if ($resurl =~ m{^/?adm/($match_domain)/($match_username)/aboutme$}) {
2995: my ($sdom,$sname) = ($1,$2);
2996: if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
2997: $home = $env{'user.home'};
2998: $cfile = $resurl;
2999: if ($env{'form.forceedit'}) {
3000: $forceview = 1;
3001: } else {
3002: $forceedit = 1;
3003: }
3004: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3005: } else {
3006: return;
3007: }
3008: }
3009:
3010: if ($env{'request.course.id'}) {
3011: my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
3012: if ($group ne '') {
3013: # if this is a group homepage or group bulletin board, check group privs
3014: my $allowed = 0;
3015: if ($resurl =~ m{^/?adm/$cdom/$cnum/$group/smppg$}) {
3016: if ((&allowed('mdg',$env{'request.course.id'}.
3017: ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3018: (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3019: $allowed = 1;
3020: }
3021: } elsif ($resurl =~ m{^/?adm/$cdom/$cnum/\d+/bulletinboard$}) {
3022: if ((&allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
3023: (&allowed('cgb',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
3024: $allowed = 1;
3025: }
3026: }
3027: if ($allowed) {
3028: $home=&homeserver($cnum,$cdom);
3029: if ($env{'form.forceedit'}) {
3030: $forceview = 1;
3031: } else {
3032: $forceedit = 1;
3033: }
3034: $cfile = $resurl;
3035: } else {
3036: return;
3037: }
3038: } else {
3039: if ($resurl =~ m{^/?adm/viewclasslist$}) {
3040: unless (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
3041: return;
3042: }
3043: } elsif (!$crsedit) {
3044: #
3045: # No edit allowed where CC has switched to student role.
3046: #
3047: return;
3048: }
3049: }
3050: }
3051:
3052: if ($file ne '') {
3053: if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
3054: if (&is_course_upload($file,$cnum,$cdom)) {
3055: $uploaded = 1;
3056: $incourse = 1;
3057: if ($file =~/\.(htm|html|css|js|txt)$/) {
3058: $cfile = &hreflocation('',$file);
3059: if ($env{'form.forceedit'}) {
3060: $forceview = 1;
3061: } else {
3062: $forceedit = 1;
3063: }
3064: }
3065: } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
3066: $incourse = 1;
3067: if ($env{'form.forceedit'}) {
3068: $forceview = 1;
3069: } else {
3070: $forceedit = 1;
3071: }
3072: $cfile = $resurl;
3073: } elsif (($resurl ne '') && (&is_on_map($resurl))) {
3074: if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
3075: $incourse = 1;
3076: if ($env{'form.forceedit'}) {
3077: $forceview = 1;
3078: } else {
3079: $forceedit = 1;
3080: }
3081: $cfile = $resurl;
3082: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem') {
3083: $incourse = 1;
3084: $cfile = $resurl.'/smpedit';
3085: } elsif ($resurl =~ m{^/adm/wrapper/ext/}) {
3086: $incourse = 1;
3087: if ($env{'form.forceedit'}) {
3088: $forceview = 1;
3089: } else {
3090: $forceedit = 1;
3091: }
3092: $cfile = $resurl;
3093: } elsif ($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/exttools?$}) {
3094: $incourse = 1;
3095: if ($env{'form.forceedit'}) {
3096: $forceview = 1;
3097: } else {
3098: $forceedit = 1;
3099: }
3100: $cfile = $resurl;
3101: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3102: $incourse = 1;
3103: if ($env{'form.forceedit'}) {
3104: $forceview = 1;
3105: } else {
3106: $forceedit = 1;
3107: }
3108: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3109: }
3110: } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
3111: my $template = '/res/lib/templates/simpleproblem.problem';
3112: if (&is_on_map($template)) {
3113: $incourse = 1;
3114: $forceview = 1;
3115: $cfile = $template;
3116: }
3117: } elsif (($resurl =~ m{^/adm/wrapper/ext/}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3118: $incourse = 1;
3119: if ($env{'form.forceedit'}) {
3120: $forceview = 1;
3121: } else {
3122: $forceedit = 1;
3123: }
3124: $cfile = $resurl;
3125: } elsif (($resurl =~ m{^/adm/wrapper/adm/$cdom/$cnum/\d+/exttools?$}) && ($env{'form.folderpath'} =~ /^supplemental/)) {
3126: $incourse = 1;
3127: if ($env{'form.forceedit'}) {
3128: $forceview = 1;
3129: } else {
3130: $forceedit = 1;
3131: }
3132: $cfile = $resurl;
3133: } elsif (($resurl eq '/adm/extresedit') && ($symb || $env{'form.folderpath'})) {
3134: $incourse = 1;
3135: $forceview = 1;
3136: if ($symb) {
3137: my ($map,$id,$res)=&decode_symb($symb);
3138: $env{'request.symb'} = $symb;
3139: $cfile = &clutter($res);
3140: } else {
3141: $cfile = $env{'form.suppurl'};
3142: my $escfile = &unescape($cfile);
3143: if ($escfile =~ m{^/adm/$cdom/$cnum/\d+/exttools?$}) {
3144: $cfile = '/adm/wrapper'.$escfile;
3145: } else {
3146: $escfile =~ s{^http://}{};
3147: $cfile = &escape("/adm/wrapper/ext/$escfile");
3148: }
3149: }
3150: } elsif ($resurl =~ m{^/?adm/viewclasslist$}) {
3151: if ($env{'form.forceedit'}) {
3152: $forceview = 1;
3153: } else {
3154: $forceedit = 1;
3155: }
3156: $cfile = ($resurl =~ m{^/} ? $resurl : "/$resurl");
3157: }
3158: }
3159: if ($uploaded || $incourse) {
3160: $home=&homeserver($cnum,$cdom);
3161: } elsif ($file !~ m{/$}) {
3162: $file=~s{^(priv/$match_domain/$match_username)}{/$1};
3163: $file=~s{^($match_domain/$match_username)}{/priv/$1};
3164: # Check that the user has permission to edit this resource
3165: my $setpriv = 1;
3166: my ($cfuname,$cfudom)=&constructaccess($file,$setpriv);
3167: if (defined($cfudom)) {
3168: $home=&homeserver($cfuname,$cfudom);
3169: $cfile=$file;
3170: }
3171: }
3172: if (($cfile ne '') && (!$incourse || $uploaded) &&
3173: (($home ne '') && ($home ne 'no_host'))) {
3174: my @ids=¤t_machine_ids();
3175: unless (grep(/^\Q$home\E$/,@ids)) {
3176: $switchserver=1;
3177: }
3178: }
3179: }
3180: return ($cfile,$home,$switchserver,$forceedit,$forceview);
3181: }
3182:
3183: sub is_course_upload {
3184: my ($file,$cnum,$cdom) = @_;
3185: my $uploadpath = &LONCAPA::propath($cdom,$cnum);
3186: $uploadpath =~ s{^\/}{};
3187: if (($file =~ m{^\Q$uploadpath\E/userfiles/(docs|supplemental)/}) ||
3188: ($file =~ m{^userfiles/\Q$cdom\E/\Q$cnum\E/(docs|supplemental)/})) {
3189: return 1;
3190: }
3191: return;
3192: }
3193:
3194: sub in_course {
3195: my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
3196: if ($hideprivileged) {
3197: my $skipuser;
3198: my %coursehash = &coursedescription($cdom.'_'.$cnum);
3199: my @possdoms = ($cdom);
3200: if ($coursehash{'checkforpriv'}) {
3201: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
3202: }
3203: if (&privileged($uname,$udom,\@possdoms)) {
3204: $skipuser = 1;
3205: if ($coursehash{'nothideprivileged'}) {
3206: foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
3207: my $user;
3208: if ($item =~ /:/) {
3209: $user = $item;
3210: } else {
3211: $user = join(':',split(/[\@]/,$item));
3212: }
3213: if ($user eq $uname.':'.$udom) {
3214: undef($skipuser);
3215: last;
3216: }
3217: }
3218: }
3219: if ($skipuser) {
3220: return 0;
3221: }
3222: }
3223: }
3224: $type ||= 'any';
3225: if (!defined($cdom) || !defined($cnum)) {
3226: my $cid = $env{'request.course.id'};
3227: $cdom = $env{'course.'.$cid.'.domain'};
3228: $cnum = $env{'course.'.$cid.'.num'};
3229: }
3230: my $typesref;
3231: if (($type eq 'any') || ($type eq 'all')) {
3232: $typesref = ['active','previous','future'];
3233: } elsif ($type eq 'previous' || $type eq 'future') {
3234: $typesref = [$type];
3235: }
3236: my %roles = &get_my_roles($uname,$udom,'userroles',
3237: $typesref,undef,[$cdom]);
3238: my ($tmp) = keys(%roles);
3239: return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
3240: my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
3241: if (@course_roles > 0) {
3242: return 1;
3243: }
3244: return 0;
3245: }
3246:
3247: # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
3248: # input: action, courseID, current domain, intended
3249: # path to file, source of file, instruction to parse file for objects,
3250: # ref to hash for embedded objects,
3251: # ref to hash for codebase of java objects.
3252: # reference to scalar to accommodate mime type determined
3253: # from File::MMagic if $parser = parse.
3254: #
3255: # output: url to file (if action was uploaddoc),
3256: # ok if successful, or diagnostic message otherwise (if action was propagate or copy)
3257: #
3258: # Allows directory structure to be used within lonUsers/../userfiles/ for a
3259: # course.
3260: #
3261: # action = propagate - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3262: # will be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles in
3263: # course's home server.
3264: #
3265: # action = copy - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file will
3266: # be copied from $source (current location) to
3267: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3268: # and will then be copied to
3269: # /home/httpd/lonUsers/$domain/1/2/3/$course/userfiles/$file in
3270: # course's home server.
3271: #
3272: # action = uploaddoc - /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3273: # will be retrived from $env{form.uploaddoc} (from DOCS interface) to
3274: # /home/httpd/html/userfiles/$domain/1/2/3/$course/$file
3275: # and will then be copied to /home/httpd/lonUsers/1/2/3/$course/userfiles/$file
3276: # in course's home server.
3277: #
3278:
3279: sub process_coursefile {
3280: my ($action,$docuname,$docudom,$file,$source,$parser,$allfiles,$codebase,
3281: $mimetype)=@_;
3282: my $fetchresult;
3283: my $home=&homeserver($docuname,$docudom);
3284: if ($action eq 'propagate') {
3285: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3286: $home);
3287: } else {
3288: my $fpath = '';
3289: my $fname = $file;
3290: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3291: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3292: my $filepath = &build_filepath($fpath);
3293: if ($action eq 'copy') {
3294: if ($source eq '') {
3295: $fetchresult = 'no source file';
3296: return $fetchresult;
3297: } else {
3298: my $destination = $filepath.'/'.$fname;
3299: rename($source,$destination);
3300: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3301: $home);
3302: }
3303: } elsif ($action eq 'uploaddoc') {
3304: open(my $fh,'>'.$filepath.'/'.$fname);
3305: print $fh $env{'form.'.$source};
3306: close($fh);
3307: if ($parser eq 'parse') {
3308: my $mm = new File::MMagic;
3309: my $type = $mm->checktype_filename($filepath.'/'.$fname);
3310: if ($type eq 'text/html') {
3311: my $parse_result = &extract_embedded_items($filepath.'/'.$fname,$allfiles,$codebase);
3312: unless ($parse_result eq 'ok') {
3313: &logthis('Failed to parse '.$filepath.'/'.$fname.' for embedded media: '.$parse_result);
3314: }
3315: }
3316: if (ref($mimetype)) {
3317: $$mimetype = $type;
3318: }
3319: }
3320: $fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3321: $home);
3322: if ($fetchresult eq 'ok') {
3323: return '/uploaded/'.$fpath.'/'.$fname;
3324: } else {
3325: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3326: ' to host '.$home.': '.$fetchresult);
3327: return '/adm/notfound.html';
3328: }
3329: }
3330: }
3331: unless ( $fetchresult eq 'ok') {
3332: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3333: ' to host '.$home.': '.$fetchresult);
3334: }
3335: return $fetchresult;
3336: }
3337:
3338: sub build_filepath {
3339: my ($fpath) = @_;
3340: my $filepath=$perlvar{'lonDocRoot'}.'/userfiles';
3341: unless ($fpath eq '') {
3342: my @parts=split('/',$fpath);
3343: foreach my $part (@parts) {
3344: $filepath.= '/'.$part;
3345: if ((-e $filepath)!=1) {
3346: mkdir($filepath,0777);
3347: }
3348: }
3349: }
3350: return $filepath;
3351: }
3352:
3353: sub store_edited_file {
3354: my ($primary_url,$content,$docudom,$docuname,$fetchresult) = @_;
3355: my $file = $primary_url;
3356: $file =~ s#^/uploaded/$docudom/$docuname/##;
3357: my $fpath = '';
3358: my $fname = $file;
3359: ($fpath,$fname) = ($file =~ m|^(.*)/([^/]+)$|);
3360: $fpath=$docudom.'/'.$docuname.'/'.$fpath;
3361: my $filepath = &build_filepath($fpath);
3362: open(my $fh,'>'.$filepath.'/'.$fname);
3363: print $fh $content;
3364: close($fh);
3365: my $home=&homeserver($docuname,$docudom);
3366: $$fetchresult= &reply('fetchuserfile:'.$docudom.'/'.$docuname.'/'.$file,
3367: $home);
3368: if ($$fetchresult eq 'ok') {
3369: return '/uploaded/'.$fpath.'/'.$fname;
3370: } else {
3371: &logthis('Failed to transfer '.$docudom.'/'.$docuname.'/'.$file.
3372: ' to host '.$home.': '.$$fetchresult);
3373: return '/adm/notfound.html';
3374: }
3375: }
3376:
3377: sub clean_filename {
3378: my ($fname,$args)=@_;
3379: # Replace Windows backslashes by forward slashes
3380: $fname=~s/\\/\//g;
3381: if (!$args->{'keep_path'}) {
3382: # Get rid of everything but the actual filename
3383: $fname=~s/^.*\/([^\/]+)$/$1/;
3384: }
3385: # Replace spaces by underscores
3386: $fname=~s/\s+/\_/g;
3387: # Replace all other weird characters by nothing
3388: $fname=~s{[^/\w\.\-]}{}g;
3389: # Replace all .\d. sequences with _\d. so they no longer look like version
3390: # numbers
3391: $fname=~s/\.(\d+)(?=\.)/_$1/g;
3392: return $fname;
3393: }
3394: # This Function checks if an Image's dimensions exceed either $resizewidth (width)
3395: # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an
3396: # image with the same aspect ratio as the original, but with dimensions which do
3397: # not exceed $resizewidth and $resizeheight.
3398:
3399: sub resizeImage {
3400: my ($img_path,$resizewidth,$resizeheight) = @_;
3401: my $ima = Image::Magick->new;
3402: my $resized;
3403: if (-e $img_path) {
3404: $ima->Read($img_path);
3405: if (($resizewidth =~ /^\d+$/) && ($resizeheight > 0)) {
3406: my $width = $ima->Get('width');
3407: my $height = $ima->Get('height');
3408: if ($width > $resizewidth) {
3409: my $factor = $width/$resizewidth;
3410: my $newheight = $height/$factor;
3411: $ima->Scale(width=>$resizewidth,height=>$newheight);
3412: $resized = 1;
3413: }
3414: }
3415: if (($resizeheight =~ /^\d+$/) && ($resizeheight > 0)) {
3416: my $width = $ima->Get('width');
3417: my $height = $ima->Get('height');
3418: if ($height > $resizeheight) {
3419: my $factor = $height/$resizeheight;
3420: my $newwidth = $width/$factor;
3421: $ima->Scale(width=>$newwidth,height=>$resizeheight);
3422: $resized = 1;
3423: }
3424: }
3425: if ($resized) {
3426: $ima->Write($img_path);
3427: }
3428: }
3429: return;
3430: }
3431:
3432: # --------------- Take an uploaded file and put it into the userfiles directory
3433: # input: $formname - the contents of the file are in $env{"form.$formname"}
3434: # the desired filename is in $env{"form.$formname.filename"}
3435: # $context - possible values: coursedoc, existingfile, overwrite,
3436: # canceloverwrite, or ''.
3437: # if 'coursedoc': upload to the current course
3438: # if 'existingfile': write file to tmp/overwrites directory
3439: # if 'canceloverwrite': delete file written to tmp/overwrites directory
3440: # $context is passed as argument to &finishuserfileupload
3441: # $subdir - directory in userfile to store the file into
3442: # $parser - instruction to parse file for objects ($parser = parse)
3443: # $allfiles - reference to hash for embedded objects
3444: # $codebase - reference to hash for codebase of java objects
3445: # $desuname - username for permanent storage of uploaded file
3446: # $dsetudom - domain for permanaent storage of uploaded file
3447: # $thumbwidth - width (pixels) of thumbnail to make for uploaded image
3448: # $thumbheight - height (pixels) of thumbnail to make for uploaded image
3449: # $resizewidth - width (pixels) to which to resize uploaded image
3450: # $resizeheight - height (pixels) to which to resize uploaded image
3451: # $mimetype - reference to scalar to accommodate mime type determined
3452: # from File::MMagic.
3453: #
3454: # output: url of file in userspace, or error: <message>
3455: # or /adm/notfound.html if failure to upload occurse
3456:
3457: sub userfileupload {
3458: my ($formname,$context,$subdir,$parser,$allfiles,$codebase,$destuname,
3459: $destudom,$thumbwidth,$thumbheight,$resizewidth,$resizeheight,$mimetype)=@_;
3460: if (!defined($subdir)) { $subdir='unknown'; }
3461: my $fname=$env{'form.'.$formname.'.filename'};
3462: $fname=&clean_filename($fname);
3463: # See if there is anything left
3464: unless ($fname) { return 'error: no uploaded file'; }
3465: # Files uploaded to help request form, or uploaded to "create course" page are handled differently
3466: if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
3467: (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
3468: ($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3469: my $now = time;
3470: my $filepath;
3471: if (($formname eq 'screenshot') && ($subdir eq 'helprequests')) {
3472: $filepath = 'tmp/helprequests/'.$now;
3473: } elsif (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) {
3474: $filepath = 'tmp/addcourse/'.$destudom.'/web/'.$env{'user.name'}.
3475: '_'.$env{'user.domain'}.'/pending';
3476: } elsif (($context eq 'existingfile') || ($context eq 'canceloverwrite')) {
3477: my ($docuname,$docudom);
3478: if ($destudom) {
3479: $docudom = $destudom;
3480: } else {
3481: $docudom = $env{'user.domain'};
3482: }
3483: if ($destuname) {
3484: $docuname = $destuname;
3485: } else {
3486: $docuname = $env{'user.name'};
3487: }
3488: if (exists($env{'form.group'})) {
3489: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3490: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3491: }
3492: $filepath = 'tmp/overwrites/'.$docudom.'/'.$docuname.'/'.$subdir;
3493: if ($context eq 'canceloverwrite') {
3494: my $tempfile = $perlvar{'lonDaemons'}.'/'.$filepath.'/'.$fname;
3495: if (-e $tempfile) {
3496: my @info = stat($tempfile);
3497: if ($info[9] eq $env{'form.timestamp'}) {
3498: unlink($tempfile);
3499: }
3500: }
3501: return;
3502: }
3503: }
3504: # Create the directory if not present
3505: my @parts=split(/\//,$filepath);
3506: my $fullpath = $perlvar{'lonDaemons'};
3507: for (my $i=0;$i<@parts;$i++) {
3508: $fullpath .= '/'.$parts[$i];
3509: if ((-e $fullpath)!=1) {
3510: mkdir($fullpath,0777);
3511: }
3512: }
3513: open(my $fh,'>'.$fullpath.'/'.$fname);
3514: print $fh $env{'form.'.$formname};
3515: close($fh);
3516: if ($context eq 'existingfile') {
3517: my @info = stat($fullpath.'/'.$fname);
3518: return ($fullpath.'/'.$fname,$info[9]);
3519: } else {
3520: return $fullpath.'/'.$fname;
3521: }
3522: }
3523: if ($subdir eq 'scantron') {
3524: $fname = 'scantron_orig_'.$fname;
3525: } else {
3526: $fname="$subdir/$fname";
3527: }
3528: if ($context eq 'coursedoc') {
3529: my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3530: my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3531: if ($env{'form.folder'} =~ m/^(default|supplemental)/) {
3532: return &finishuserfileupload($docuname,$docudom,
3533: $formname,$fname,$parser,$allfiles,
3534: $codebase,$thumbwidth,$thumbheight,
3535: $resizewidth,$resizeheight,$context,$mimetype);
3536: } else {
3537: if ($env{'form.folder'}) {
3538: $fname=$env{'form.folder'}.'/'.$fname;
3539: }
3540: return &process_coursefile('uploaddoc',$docuname,$docudom,
3541: $fname,$formname,$parser,
3542: $allfiles,$codebase,$mimetype);
3543: }
3544: } elsif (defined($destuname)) {
3545: my $docuname=$destuname;
3546: my $docudom=$destudom;
3547: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3548: $parser,$allfiles,$codebase,
3549: $thumbwidth,$thumbheight,
3550: $resizewidth,$resizeheight,$context,$mimetype);
3551: } else {
3552: my $docuname=$env{'user.name'};
3553: my $docudom=$env{'user.domain'};
3554: if ((exists($env{'form.group'})) || ($context eq 'syllabus')) {
3555: $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
3556: $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
3557: }
3558: return &finishuserfileupload($docuname,$docudom,$formname,$fname,
3559: $parser,$allfiles,$codebase,
3560: $thumbwidth,$thumbheight,
3561: $resizewidth,$resizeheight,$context,$mimetype);
3562: }
3563: }
3564:
3565: sub finishuserfileupload {
3566: my ($docuname,$docudom,$formname,$fname,$parser,$allfiles,$codebase,
3567: $thumbwidth,$thumbheight,$resizewidth,$resizeheight,$context,$mimetype) = @_;
3568: my $path=$docudom.'/'.$docuname.'/';
3569: my $filepath=$perlvar{'lonDocRoot'};
3570:
3571: my ($fnamepath,$file,$fetchthumb);
3572: $file=$fname;
3573: if ($fname=~m|/|) {
3574: ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
3575: $path.=$fnamepath.'/';
3576: }
3577: my @parts=split(/\//,$filepath.'/userfiles/'.$path);
3578: my $count;
3579: for ($count=4;$count<=$#parts;$count++) {
3580: $filepath.="/$parts[$count]";
3581: if ((-e $filepath)!=1) {
3582: mkdir($filepath,0777);
3583: }
3584: }
3585:
3586: # Save the file
3587: {
3588: if (!open(FH,'>'.$filepath.'/'.$file)) {
3589: &logthis('Failed to create '.$filepath.'/'.$file);
3590: print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
3591: return '/adm/notfound.html';
3592: }
3593: if ($context eq 'overwrite') {
3594: my $source = LONCAPA::tempdir().'/overwrites/'.$docudom.'/'.$docuname.'/'.$fname;
3595: my $target = $filepath.'/'.$file;
3596: if (-e $source) {
3597: my @info = stat($source);
3598: if ($info[9] eq $env{'form.timestamp'}) {
3599: unless (&File::Copy::move($source,$target)) {
3600: &logthis('Failed to overwrite '.$filepath.'/'.$file);
3601: return "Moving from $source failed";
3602: }
3603: } else {
3604: return "Temporary file: $source had unexpected date/time for last modification";
3605: }
3606: } else {
3607: return "Temporary file: $source missing";
3608: }
3609: } elsif (!print FH ($env{'form.'.$formname})) {
3610: &logthis('Failed to write to '.$filepath.'/'.$file);
3611: print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
3612: return '/adm/notfound.html';
3613: }
3614: close(FH);
3615: if ($resizewidth && $resizeheight) {
3616: my $mm = new File::MMagic;
3617: my $mime_type = $mm->checktype_filename($filepath.'/'.$file);
3618: if ($mime_type =~ m{^image/}) {
3619: &resizeImage($filepath.'/'.$file,$resizewidth,$resizeheight);
3620: }
3621: }
3622: }
3623: if (($context eq 'coursedoc') || ($parser eq 'parse')) {
3624: if (ref($mimetype)) {
3625: if ($$mimetype eq '') {
3626: my $mm = new File::MMagic;
3627: my $type = $mm->checktype_filename($filepath.'/'.$file);
3628: $$mimetype = $type;
3629: }
3630: }
3631: }
3632: if ($parser eq 'parse') {
3633: if ((ref($mimetype)) && ($$mimetype eq 'text/html')) {
3634: my $parse_result = &extract_embedded_items($filepath.'/'.$file,
3635: $allfiles,$codebase);
3636: unless ($parse_result eq 'ok') {
3637: &logthis('Failed to parse '.$filepath.$file.
3638: ' for embedded media: '.$parse_result);
3639: }
3640: }
3641: }
3642: if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
3643: my $input = $filepath.'/'.$file;
3644: my $output = $filepath.'/'.'tn-'.$file;
3645: my $thumbsize = $thumbwidth.'x'.$thumbheight;
3646: system("convert -sample $thumbsize $input $output");
3647: if (-e $filepath.'/'.'tn-'.$file) {
3648: $fetchthumb = 1;
3649: }
3650: }
3651:
3652: # Notify homeserver to grep it
3653: #
3654: my $docuhome=&homeserver($docuname,$docudom);
3655: my $fetchresult= &reply('fetchuserfile:'.$path.$file,$docuhome);
3656: if ($fetchresult eq 'ok') {
3657: if ($fetchthumb) {
3658: my $thumbresult= &reply('fetchuserfile:'.$path.'tn-'.$file,$docuhome);
3659: if ($thumbresult ne 'ok') {
3660: &logthis('Failed to transfer '.$path.'tn-'.$file.' to host '.
3661: $docuhome.': '.$thumbresult);
3662: }
3663: }
3664: #
3665: # Return the URL to it
3666: return '/uploaded/'.$path.$file;
3667: } else {
3668: &logthis('Failed to transfer '.$path.$file.' to host '.$docuhome.
3669: ': '.$fetchresult);
3670: return '/adm/notfound.html';
3671: }
3672: }
3673:
3674: sub extract_embedded_items {
3675: my ($fullpath,$allfiles,$codebase,$content) = @_;
3676: my @state = ();
3677: my (%lastids,%related,%shockwave,%flashvars);
3678: my %javafiles = (
3679: codebase => '',
3680: code => '',
3681: archive => ''
3682: );
3683: my %mediafiles = (
3684: src => '',
3685: movie => '',
3686: );
3687: my $p;
3688: if ($content) {
3689: $p = HTML::LCParser->new($content);
3690: } else {
3691: $p = HTML::LCParser->new($fullpath);
3692: }
3693: while (my $t=$p->get_token()) {
3694: if ($t->[0] eq 'S') {
3695: my ($tagname, $attr) = ($t->[1],$t->[2]);
3696: push(@state, $tagname);
3697: if (lc($tagname) eq 'allow') {
3698: &add_filetype($allfiles,$attr->{'src'},'src');
3699: }
3700: if (lc($tagname) eq 'img') {
3701: &add_filetype($allfiles,$attr->{'src'},'src');
3702: }
3703: if (lc($tagname) eq 'a') {
3704: unless (($attr->{'href'} =~ /^#/) || ($attr->{'href'} eq '')) {
3705: &add_filetype($allfiles,$attr->{'href'},'href');
3706: }
3707: }
3708: if (lc($tagname) eq 'script') {
3709: my $src;
3710: if ($attr->{'archive'} =~ /\.jar$/i) {
3711: &add_filetype($allfiles,$attr->{'archive'},'archive');
3712: } else {
3713: if ($attr->{'src'} ne '') {
3714: $src = $attr->{'src'};
3715: &add_filetype($allfiles,$src,'src');
3716: }
3717: }
3718: my $text = $p->get_trimmed_text();
3719: if ($text =~ /\Qswfobject.registerObject(\E([^\)]+)\)/) {
3720: my @swfargs = split(/,/,$1);
3721: foreach my $item (@swfargs) {
3722: $item =~ s/["']//g;
3723: $item =~ s/^\s+//;
3724: $item =~ s/\s+$//;
3725: }
3726: if (($swfargs[0] ne'') && ($swfargs[2] ne '')) {
3727: if (ref($related{$swfargs[0]}) eq 'ARRAY') {
3728: push(@{$related{$swfargs[0]}},$swfargs[2]);
3729: } else {
3730: $related{$swfargs[0]} = [$swfargs[2]];
3731: }
3732: }
3733: }
3734: }
3735: if (lc($tagname) eq 'link') {
3736: if (lc($attr->{'rel'}) eq 'stylesheet') {
3737: &add_filetype($allfiles,$attr->{'href'},'href');
3738: }
3739: }
3740: if (lc($tagname) eq 'object' ||
3741: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')) {
3742: foreach my $item (keys(%javafiles)) {
3743: $javafiles{$item} = '';
3744: }
3745: if ((lc($tagname) eq 'object') && (lc($state[-2]) ne 'object')) {
3746: $lastids{lc($tagname)} = $attr->{'id'};
3747: }
3748: }
3749: if (lc($state[-2]) eq 'object' && lc($tagname) eq 'param') {
3750: my $name = lc($attr->{'name'});
3751: foreach my $item (keys(%javafiles)) {
3752: if ($name eq $item) {
3753: $javafiles{$item} = $attr->{'value'};
3754: last;
3755: }
3756: }
3757: my $pathfrom;
3758: foreach my $item (keys(%mediafiles)) {
3759: if ($name eq $item) {
3760: $pathfrom = $attr->{'value'};
3761: $shockwave{$lastids{lc($state[-2])}} = $pathfrom;
3762: &add_filetype($allfiles,$pathfrom,$name);
3763: last;
3764: }
3765: }
3766: if ($name eq 'flashvars') {
3767: $flashvars{$lastids{lc($state[-2])}} = $attr->{'value'};
3768: }
3769: if ($pathfrom ne '') {
3770: &embedded_dependency($allfiles,\%related,$lastids{lc($state[-2])},
3771: $pathfrom);
3772: }
3773: }
3774: if (lc($tagname) eq 'embed' || lc($tagname) eq 'applet') {
3775: foreach my $item (keys(%javafiles)) {
3776: if ($attr->{$item}) {
3777: $javafiles{$item} = $attr->{$item};
3778: last;
3779: }
3780: }
3781: foreach my $item (keys(%mediafiles)) {
3782: if ($attr->{$item}) {
3783: &add_filetype($allfiles,$attr->{$item},$item);
3784: last;
3785: }
3786: }
3787: if (lc($tagname) eq 'embed') {
3788: if (($attr->{'name'} ne '') && ($attr->{'src'} ne '')) {
3789: &embedded_dependency($allfiles,\%related,$attr->{'name'},
3790: $attr->{'src'});
3791: }
3792: }
3793: }
3794: if (lc($tagname) eq 'iframe') {
3795: my $src = $attr->{'src'} ;
3796: if (($src ne '') && ($src !~ m{^(/|https?://)})) {
3797: &add_filetype($allfiles,$src,'src');
3798: } elsif ($src =~ m{^/}) {
3799: if ($env{'request.course.id'}) {
3800: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
3801: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
3802: my $url = &hreflocation('',$fullpath);
3803: if ($url =~ m{^/uploaded/$cdom/$cnum/docs/(\w+/\d+)/}) {
3804: my $relpath = $1;
3805: if ($src =~ m{^/uploaded/$cdom/$cnum/docs/\Q$relpath\E/(.+)$}) {
3806: &add_filetype($allfiles,$1,'src');
3807: }
3808: }
3809: }
3810: }
3811: }
3812: if ($t->[4] =~ m{/>$}) {
3813: pop(@state);
3814: }
3815: } elsif ($t->[0] eq 'E') {
3816: my ($tagname) = ($t->[1]);
3817: if ($javafiles{'codebase'} ne '') {
3818: $javafiles{'codebase'} .= '/';
3819: }
3820: if (lc($tagname) eq 'applet' ||
3821: lc($tagname) eq 'object' ||
3822: (lc($tagname) eq 'embed' && lc($state[-2]) ne 'object')
3823: ) {
3824: foreach my $item (keys(%javafiles)) {
3825: if ($item ne 'codebase' && $javafiles{$item} ne '') {
3826: my $file=$javafiles{'codebase'}.$javafiles{$item};
3827: &add_filetype($allfiles,$file,$item);
3828: }
3829: }
3830: }
3831: pop @state;
3832: }
3833: }
3834: foreach my $id (sort(keys(%flashvars))) {
3835: if ($shockwave{$id} ne '') {
3836: my @pairs = split(/\&/,$flashvars{$id});
3837: foreach my $pair (@pairs) {
3838: my ($key,$value) = split(/\=/,$pair);
3839: if ($key eq 'thumb') {
3840: &add_filetype($allfiles,$value,$key);
3841: } elsif ($key eq 'content') {
3842: my ($path) = ($shockwave{$id} =~ m{^(.+/)[^/]+$});
3843: my ($ext) = ($value =~ /\.([^.]+)$/);
3844: if ($ext ne '') {
3845: &add_filetype($allfiles,$path.$value,$ext);
3846: }
3847: }
3848: }
3849: }
3850: }
3851: return 'ok';
3852: }
3853:
3854: sub add_filetype {
3855: my ($allfiles,$file,$type)=@_;
3856: if (exists($allfiles->{$file})) {
3857: unless (grep/^\Q$type\E$/, @{$allfiles->{$file}}) {
3858: push(@{$allfiles->{$file}}, &escape($type));
3859: }
3860: } else {
3861: @{$allfiles->{$file}} = (&escape($type));
3862: }
3863: }
3864:
3865: sub embedded_dependency {
3866: my ($allfiles,$related,$identifier,$pathfrom) = @_;
3867: if ((ref($allfiles) eq 'HASH') && (ref($related) eq 'HASH')) {
3868: if (($identifier ne '') &&
3869: (ref($related->{$identifier}) eq 'ARRAY') &&
3870: ($pathfrom ne '')) {
3871: my ($path) = ($pathfrom =~ m{^(.+/)[^/]+$});
3872: foreach my $dep (@{$related->{$identifier}}) {
3873: &add_filetype($allfiles,$path.$dep,'object');
3874: }
3875: }
3876: }
3877: return;
3878: }
3879:
3880: sub removeuploadedurl {
3881: my ($url)=@_;
3882: my (undef,undef,$udom,$uname,$fname)=split('/',$url,5);
3883: return &removeuserfile($uname,$udom,$fname);
3884: }
3885:
3886: sub removeuserfile {
3887: my ($docuname,$docudom,$fname)=@_;
3888: my $home=&homeserver($docuname,$docudom);
3889: my $result = &reply("removeuserfile:$docudom/$docuname/$fname",$home);
3890: if ($result eq 'ok') {
3891: if (($fname !~ /\.meta$/) && (&is_portfolio_file($fname))) {
3892: my $metafile = $fname.'.meta';
3893: my $metaresult = &removeuserfile($docuname,$docudom,$metafile);
3894: my $url = "/uploaded/$docudom/$docuname/$fname";
3895: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3896: my $sqlresult =
3897: &update_portfolio_table($docuname,$docudom,$file,
3898: 'portfolio_metadata',$group,
3899: 'delete');
3900: }
3901: }
3902: return $result;
3903: }
3904:
3905: sub mkdiruserfile {
3906: my ($docuname,$docudom,$dir)=@_;
3907: my $home=&homeserver($docuname,$docudom);
3908: return &reply("mkdiruserfile:".&escape("$docudom/$docuname/$dir"),$home);
3909: }
3910:
3911: sub renameuserfile {
3912: my ($docuname,$docudom,$old,$new)=@_;
3913: my $home=&homeserver($docuname,$docudom);
3914: my $result = &reply("renameuserfile:$docudom:$docuname:".
3915: &escape("$old").':'.&escape("$new"),$home);
3916: if ($result eq 'ok') {
3917: if (($old !~ /\.meta$/) && (&is_portfolio_file($old))) {
3918: my $oldmeta = $old.'.meta';
3919: my $newmeta = $new.'.meta';
3920: my $metaresult =
3921: &renameuserfile($docuname,$docudom,$oldmeta,$newmeta);
3922: my $url = "/uploaded/$docudom/$docuname/$old";
3923: my ($file,$group) = (&parse_portfolio_url($url))[3,4];
3924: my $sqlresult =
3925: &update_portfolio_table($docuname,$docudom,$file,
3926: 'portfolio_metadata',$group,
3927: 'delete');
3928: }
3929: }
3930: return $result;
3931: }
3932:
3933: # ------------------------------------------------------------------------- Log
3934:
3935: sub log {
3936: my ($dom,$nam,$hom,$what)=@_;
3937: return critical("log:$dom:$nam:$what",$hom);
3938: }
3939:
3940: # ------------------------------------------------------------------ Course Log
3941: #
3942: # This routine flushes several buffers of non-mission-critical nature
3943: #
3944:
3945: sub flushcourselogs {
3946: &logthis('Flushing log buffers');
3947: #
3948: # course logs
3949: # This is a log of all transactions in a course, which can be used
3950: # for data mining purposes
3951: #
3952: # It also collects the courseid database, which lists last transaction
3953: # times and course titles for all courseids
3954: #
3955: my %courseidbuffer=();
3956: foreach my $crsid (keys(%courselogs)) {
3957: if (&reply('log:'.$coursedombuf{$crsid}.':'.$coursenumbuf{$crsid}.':'.
3958: &escape($courselogs{$crsid}),
3959: $coursehombuf{$crsid}) eq 'ok') {
3960: delete $courselogs{$crsid};
3961: } else {
3962: &logthis('Failed to flush log buffer for '.$crsid);
3963: if (length($courselogs{$crsid})>40000) {
3964: &logthis("<font color=\"blue\">WARNING: Buffer for ".$crsid.
3965: " exceeded maximum size, deleting.</font>");
3966: delete $courselogs{$crsid};
3967: }
3968: }
3969: $courseidbuffer{$coursehombuf{$crsid}}{$crsid} = {
3970: 'description' => $coursedescrbuf{$crsid},
3971: 'inst_code' => $courseinstcodebuf{$crsid},
3972: 'type' => $coursetypebuf{$crsid},
3973: 'owner' => $courseownerbuf{$crsid},
3974: };
3975: }
3976: #
3977: # Write course id database (reverse lookup) to homeserver of courses
3978: # Is used in pickcourse
3979: #
3980: foreach my $crs_home (keys(%courseidbuffer)) {
3981: my $response = &courseidput(&host_domain($crs_home),
3982: $courseidbuffer{$crs_home},
3983: $crs_home,'timeonly');
3984: }
3985: #
3986: # File accesses
3987: # Writes to the dynamic metadata of resources to get hit counts, etc.
3988: #
3989: foreach my $entry (keys(%accesshash)) {
3990: if ($entry =~ /___count$/) {
3991: my ($dom,$name);
3992: ($dom,$name,undef)=
3993: ($entry=~m{___($match_domain)/($match_name)/(.*)___count$});
3994: if (! defined($dom) || $dom eq '' ||
3995: ! defined($name) || $name eq '') {
3996: my $cid = $env{'request.course.id'};
3997: $dom = $env{'request.'.$cid.'.domain'};
3998: $name = $env{'request.'.$cid.'.num'};
3999: }
4000: my $value = $accesshash{$entry};
4001: my (undef,$url,undef) = ($entry =~ /^(.*)___(.*)___count$/);
4002: my %temphash=($url => $value);
4003: my $result = &inc('nohist_accesscount',\%temphash,$dom,$name);
4004: if ($result eq 'ok') {
4005: delete $accesshash{$entry};
4006: }
4007: } else {
4008: my ($dom,$name) = ($entry=~m{___($match_domain)/($match_name)/(.*)___(\w+)$});
4009: if (($dom eq 'uploaded') || ($dom eq 'adm')) { next; }
4010: my %temphash=($entry => $accesshash{$entry});
4011: if (&put('nohist_resevaldata',\%temphash,$dom,$name) eq 'ok') {
4012: delete $accesshash{$entry};
4013: }
4014: }
4015: }
4016: #
4017: # Roles
4018: # Reverse lookup of user roles for course faculty/staff and co-authorship
4019: #
4020: foreach my $entry (keys(%userrolehash)) {
4021: my ($role,$uname,$udom,$runame,$rudom,$rsec)=
4022: split(/\:/,$entry);
4023: if (&Apache::lonnet::put('nohist_userroles',
4024: { $role.':'.$uname.':'.$udom.':'.$rsec => $userrolehash{$entry} },
4025: $rudom,$runame) eq 'ok') {
4026: delete $userrolehash{$entry};
4027: }
4028: }
4029: #
4030: # Reverse lookup of domain roles (dc, ad, li, sc, au)
4031: #
4032: my %domrolebuffer = ();
4033: foreach my $entry (keys(%domainrolehash)) {
4034: my ($role,$uname,$udom,$runame,$rudom,$rsec)=split(/:/,$entry);
4035: if ($domrolebuffer{$rudom}) {
4036: $domrolebuffer{$rudom}.='&'.&escape($entry).
4037: '='.&escape($domainrolehash{$entry});
4038: } else {
4039: $domrolebuffer{$rudom}.=&escape($entry).
4040: '='.&escape($domainrolehash{$entry});
4041: }
4042: delete $domainrolehash{$entry};
4043: }
4044: foreach my $dom (keys(%domrolebuffer)) {
4045: my %servers = &get_servers($dom,'library');
4046: foreach my $tryserver (keys(%servers)) {
4047: unless (&reply('domroleput:'.$dom.':'.
4048: $domrolebuffer{$dom},$tryserver) eq 'ok') {
4049: &logthis('Put of domain roles failed for '.$dom.' and '.$tryserver);
4050: }
4051: }
4052: }
4053: $dumpcount++;
4054: }
4055:
4056: sub courselog {
4057: my $what=shift;
4058: $what=time.':'.$what;
4059: unless ($env{'request.course.id'}) { return ''; }
4060: $coursedombuf{$env{'request.course.id'}}=
4061: $env{'course.'.$env{'request.course.id'}.'.domain'};
4062: $coursenumbuf{$env{'request.course.id'}}=
4063: $env{'course.'.$env{'request.course.id'}.'.num'};
4064: $coursehombuf{$env{'request.course.id'}}=
4065: $env{'course.'.$env{'request.course.id'}.'.home'};
4066: $coursedescrbuf{$env{'request.course.id'}}=
4067: $env{'course.'.$env{'request.course.id'}.'.description'};
4068: $courseinstcodebuf{$env{'request.course.id'}}=
4069: $env{'course.'.$env{'request.course.id'}.'.internal.coursecode'};
4070: $courseownerbuf{$env{'request.course.id'}}=
4071: $env{'course.'.$env{'request.course.id'}.'.internal.courseowner'};
4072: $coursetypebuf{$env{'request.course.id'}}=
4073: $env{'course.'.$env{'request.course.id'}.'.type'};
4074: if (defined $courselogs{$env{'request.course.id'}}) {
4075: $courselogs{$env{'request.course.id'}}.='&'.$what;
4076: } else {
4077: $courselogs{$env{'request.course.id'}}.=$what;
4078: }
4079: if (length($courselogs{$env{'request.course.id'}})>4048) {
4080: &flushcourselogs();
4081: }
4082: }
4083:
4084: sub courseacclog {
4085: my $fnsymb=shift;
4086: unless ($env{'request.course.id'}) { return ''; }
4087: my $what=$fnsymb.':'.$env{'user.name'}.':'.$env{'user.domain'};
4088: if ($fnsymb=~/$LONCAPA::assess_re/) {
4089: $what.=':POST';
4090: # FIXME: Probably ought to escape things....
4091: foreach my $key (keys(%env)) {
4092: if ($key=~/^form\.(.*)/) {
4093: my $formitem = $1;
4094: if ($formitem =~ /^HWFILE(?:SIZE|TOOBIG)/) {
4095: $what.=':'.$formitem.'='.$env{$key};
4096: } elsif ($formitem !~ /^HWFILE(?:[^.]+)$/) {
4097: $what.=':'.$formitem.'='.$env{$key};
4098: }
4099: }
4100: }
4101: } elsif ($fnsymb =~ m:^/adm/searchcat:) {
4102: # FIXME: We should not be depending on a form parameter that someone
4103: # editing lonsearchcat.pm might change in the future.
4104: if ($env{'form.phase'} eq 'course_search') {
4105: $what.= ':POST';
4106: # FIXME: Probably ought to escape things....
4107: foreach my $element ('courseexp','crsfulltext','crsrelated',
4108: 'crsdiscuss') {
4109: $what.=':'.$element.'='.$env{'form.'.$element};
4110: }
4111: }
4112: }
4113: &courselog($what);
4114: }
4115:
4116: sub countacc {
4117: my $url=&declutter(shift);
4118: return if (! defined($url) || $url eq '');
4119: unless ($env{'request.course.id'}) { return ''; }
4120: #
4121: # Mark that this url was used in this course
4122: #
4123: $accesshash{$env{'request.course.id'}.'___'.$url.'___course'}=1;
4124: #
4125: # Increase the access count for this resource in this child process
4126: #
4127: my $key=$$.$processmarker.'_'.$dumpcount.'___'.$url.'___count';
4128: $accesshash{$key}++;
4129: }
4130:
4131: sub linklog {
4132: my ($from,$to)=@_;
4133: $from=&declutter($from);
4134: $to=&declutter($to);
4135: $accesshash{$from.'___'.$to.'___comefrom'}=1;
4136: $accesshash{$to.'___'.$from.'___goto'}=1;
4137: }
4138:
4139: sub statslog {
4140: my ($symb,$part,$users,$av_attempts,$degdiff)=@_;
4141: if ($users<2) { return; }
4142: my %dynstore=&LONCAPA::lonmetadata::dynamic_metadata_storage({
4143: 'course' => $env{'request.course.id'},
4144: 'sections' => '"all"',
4145: 'num_students' => $users,
4146: 'part' => $part,
4147: 'symb' => $symb,
4148: 'mean_tries' => $av_attempts,
4149: 'deg_of_diff' => $degdiff});
4150: foreach my $key (keys(%dynstore)) {
4151: $accesshash{$key}=$dynstore{$key};
4152: }
4153: }
4154:
4155: sub userrolelog {
4156: my ($trole,$username,$domain,$area,$tstart,$tend)=@_;
4157: if ( $trole =~ /^(ca|aa|in|cc|ep|cr|ta|co)/ ) {
4158: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4159: $userrolehash
4160: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4161: =$tend.':'.$tstart;
4162: }
4163: if ($env{'request.role'} =~ /dc\./ && $trole =~ /^(au|in|cc|ep|cr|ta|co)/) {
4164: $userrolehash
4165: {$trole.':'.$username.':'.$domain.':'.$env{'user.name'}.':'.$env{'user.domain'}.':'}
4166: =$tend.':'.$tstart;
4167: }
4168: if ($trole =~ /^(dc|ad|li|au|dg|sc)/ ) {
4169: my (undef,$rudom,$runame,$rsec)=split(/\//,$area);
4170: $domainrolehash
4171: {$trole.':'.$username.':'.$domain.':'.$runame.':'.$rudom.':'.$rsec}
4172: = $tend.':'.$tstart;
4173: }
4174: }
4175:
4176: sub courserolelog {
4177: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
4178: if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
4179: my $cdom = $1;
4180: my $cnum = $2;
4181: my $sec = $3;
4182: my $namespace = 'rolelog';
4183: my %storehash = (
4184: role => $trole,
4185: start => $tstart,
4186: end => $tend,
4187: selfenroll => $selfenroll,
4188: context => $context,
4189: );
4190: if ($trole eq 'gr') {
4191: $namespace = 'groupslog';
4192: $storehash{'group'} = $sec;
4193: } else {
4194: $storehash{'section'} = $sec;
4195: }
4196: &write_log('course',$namespace,\%storehash,$delflag,$username,
4197: $domain,$cnum,$cdom);
4198: if (($trole ne 'st') || ($sec ne '')) {
4199: &devalidate_cache_new('getcourseroles',$cdom.'_'.$cnum);
4200: }
4201: }
4202: return;
4203: }
4204:
4205: sub domainrolelog {
4206: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4207: if ($area =~ m{^/($match_domain)/$}) {
4208: my $cdom = $1;
4209: my $domconfiguser = &Apache::lonnet::get_domainconfiguser($cdom);
4210: my $namespace = 'rolelog';
4211: my %storehash = (
4212: role => $trole,
4213: start => $tstart,
4214: end => $tend,
4215: context => $context,
4216: );
4217: &write_log('domain',$namespace,\%storehash,$delflag,$username,
4218: $domain,$domconfiguser,$cdom);
4219: }
4220: return;
4221:
4222: }
4223:
4224: sub coauthorrolelog {
4225: my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$context)=@_;
4226: if ($area =~ m{^/($match_domain)/($match_username)$}) {
4227: my $audom = $1;
4228: my $auname = $2;
4229: my $namespace = 'rolelog';
4230: my %storehash = (
4231: role => $trole,
4232: start => $tstart,
4233: end => $tend,
4234: context => $context,
4235: );
4236: &write_log('author',$namespace,\%storehash,$delflag,$username,
4237: $domain,$auname,$audom);
4238: }
4239: return;
4240: }
4241:
4242: sub get_course_adv_roles {
4243: my ($cid,$codes) = @_;
4244: $cid=$env{'request.course.id'} unless (defined($cid));
4245: my %coursehash=&coursedescription($cid);
4246: my $crstype = &Apache::loncommon::course_type($cid);
4247: my %nothide=();
4248: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4249: if ($user !~ /:/) {
4250: $nothide{join(':',split(/[\@]/,$user))}=1;
4251: } else {
4252: $nothide{$user}=1;
4253: }
4254: }
4255: my @possdoms = ($coursehash{'domain'});
4256: if ($coursehash{'checkforpriv'}) {
4257: push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
4258: }
4259: my %returnhash=();
4260: my %dumphash=
4261: &dump('nohist_userroles',$coursehash{'domain'},$coursehash{'num'});
4262: my $now=time;
4263: my %privileged;
4264: foreach my $entry (keys(%dumphash)) {
4265: my ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4266: if (($tstart) && ($tstart<0)) { next; }
4267: if (($tend) && ($tend<$now)) { next; }
4268: if (($tstart) && ($now<$tstart)) { next; }
4269: my ($role,$username,$domain,$section)=split(/\:/,$entry);
4270: if ($username eq '' || $domain eq '') { next; }
4271: if ((&privileged($username,$domain,\@possdoms)) &&
4272: (!$nothide{$username.':'.$domain})) { next; }
4273: if ($role eq 'cr') { next; }
4274: if ($codes) {
4275: if ($section) { $role .= ':'.$section; }
4276: if ($returnhash{$role}) {
4277: $returnhash{$role}.=','.$username.':'.$domain;
4278: } else {
4279: $returnhash{$role}=$username.':'.$domain;
4280: }
4281: } else {
4282: my $key=&plaintext($role,$crstype);
4283: if ($section) { $key.=' ('.&Apache::lonlocal::mt('Section [_1]',$section).')'; }
4284: if ($returnhash{$key}) {
4285: $returnhash{$key}.=','.$username.':'.$domain;
4286: } else {
4287: $returnhash{$key}=$username.':'.$domain;
4288: }
4289: }
4290: }
4291: return %returnhash;
4292: }
4293:
4294: sub get_my_roles {
4295: my ($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv)=@_;
4296: unless (defined($uname)) { $uname=$env{'user.name'}; }
4297: unless (defined($udom)) { $udom=$env{'user.domain'}; }
4298: my (%dumphash,%nothide);
4299: if ($context eq 'userroles') {
4300: %dumphash = &dump('roles',$udom,$uname);
4301: } else {
4302: %dumphash = &dump('nohist_userroles',$udom,$uname);
4303: if ($hidepriv) {
4304: my %coursehash=&coursedescription($udom.'_'.$uname);
4305: foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
4306: if ($user !~ /:/) {
4307: $nothide{join(':',split(/[\@]/,$user))} = 1;
4308: } else {
4309: $nothide{$user} = 1;
4310: }
4311: }
4312: }
4313: }
4314: my %returnhash=();
4315: my $now=time;
4316: my %privileged;
4317: foreach my $entry (keys(%dumphash)) {
4318: my ($role,$tend,$tstart);
4319: if ($context eq 'userroles') {
4320: next if ($entry =~ /^rolesdef/);
4321: ($role,$tend,$tstart)=split(/_/,$dumphash{$entry});
4322: } else {
4323: ($tend,$tstart)=split(/\:/,$dumphash{$entry});
4324: }
4325: if (($tstart) && ($tstart<0)) { next; }
4326: my $status = 'active';
4327: if (($tend) && ($tend<=$now)) {
4328: $status = 'previous';
4329: }
4330: if (($tstart) && ($now<$tstart)) {
4331: $status = 'future';
4332: }
4333: if (ref($types) eq 'ARRAY') {
4334: if (!grep(/^\Q$status\E$/,@{$types})) {
4335: next;
4336: }
4337: } else {
4338: if ($status ne 'active') {
4339: next;
4340: }
4341: }
4342: my ($rolecode,$username,$domain,$section,$area);
4343: if ($context eq 'userroles') {
4344: ($area,$rolecode) = ($entry =~ /^(.+)_([^_]+)$/);
4345: (undef,$domain,$username,$section) = split(/\//,$area);
4346: } else {
4347: ($role,$username,$domain,$section) = split(/\:/,$entry);
4348: }
4349: if (ref($roledoms) eq 'ARRAY') {
4350: if (!grep(/^\Q$domain\E$/,@{$roledoms})) {
4351: next;
4352: }
4353: }
4354: if (ref($roles) eq 'ARRAY') {
4355: if (!grep(/^\Q$role\E$/,@{$roles})) {
4356: if ($role =~ /^cr\//) {
4357: if (!grep(/^cr$/,@{$roles})) {
4358: next;
4359: }
4360: } elsif ($role =~ /^gr\//) {
4361: if (!grep(/^gr$/,@{$roles})) {
4362: next;
4363: }
4364: } else {
4365: next;
4366: }
4367: }
4368: }
4369: if ($hidepriv) {
4370: my @privroles = ('dc','su');
4371: if ($context eq 'userroles') {
4372: next if (grep(/^\Q$role\E$/,@privroles));
4373: } else {
4374: my $possdoms = [$domain];
4375: if (ref($roledoms) eq 'ARRAY') {
4376: push(@{$possdoms},@{$roledoms});
4377: }
4378: if (&privileged($username,$domain,$possdoms,\@privroles)) {
4379: if (!$nothide{$username.':'.$domain}) {
4380: next;
4381: }
4382: }
4383: }
4384: }
4385: if ($withsec) {
4386: $returnhash{$username.':'.$domain.':'.$role.':'.$section} =
4387: $tstart.':'.$tend;
4388: } else {
4389: $returnhash{$username.':'.$domain.':'.$role}=$tstart.':'.$tend;
4390: }
4391: }
4392: return %returnhash;
4393: }
4394:
4395: # ----------------------------------------------------- Frontpage Announcements
4396: #
4397: #
4398:
4399: sub postannounce {
4400: my ($server,$text)=@_;
4401: unless (&allowed('psa',&host_domain($server))) { return 'refused'; }
4402: unless ($text=~/\w/) { $text=''; }
4403: return &reply('setannounce:'.&escape($text),$server);
4404: }
4405:
4406: sub getannounce {
4407:
4408: if (open(my $fh,$perlvar{'lonDocRoot'}.'/announcement.txt')) {
4409: my $announcement='';
4410: while (my $line = <$fh>) { $announcement .= $line; }
4411: close($fh);
4412: if ($announcement=~/\w/) {
4413: return
4414: '<table bgcolor="#FF5555" cellpadding="5" cellspacing="3">'.
4415: '<tr><td bgcolor="#FFFFFF"><tt>'.$announcement.'</tt></td></tr></table>';
4416: } else {
4417: return '';
4418: }
4419: } else {
4420: return '';
4421: }
4422: }
4423:
4424: # ---------------------------------------------------------- Course ID routines
4425: # Deal with domain's nohist_courseid.db files
4426: #
4427:
4428: sub courseidput {
4429: my ($domain,$storehash,$coursehome,$caller) = @_;
4430: return unless (ref($storehash) eq 'HASH');
4431: my $outcome;
4432: if ($caller eq 'timeonly') {
4433: my $cids = '';
4434: foreach my $item (keys(%$storehash)) {
4435: $cids.=&escape($item).'&';
4436: }
4437: $cids=~s/\&$//;
4438: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$cids,
4439: $coursehome);
4440: } else {
4441: my $items = '';
4442: foreach my $item (keys(%$storehash)) {
4443: $items.= &escape($item).'='.
4444: &freeze_escape($$storehash{$item}).'&';
4445: }
4446: $items=~s/\&$//;
4447: $outcome = &reply('courseidputhash:'.$domain.':'.$caller.':'.$items,
4448: $coursehome);
4449: }
4450: if ($outcome eq 'unknown_cmd') {
4451: my $what;
4452: foreach my $cid (keys(%$storehash)) {
4453: $what .= &escape($cid).'=';
4454: foreach my $item ('description','inst_code','owner','type') {
4455: $what .= &escape($storehash->{$cid}{$item}).':';
4456: }
4457: $what =~ s/\:$/&/;
4458: }
4459: $what =~ s/\&$//;
4460: return &reply('courseidput:'.$domain.':'.$what,$coursehome);
4461: } else {
4462: return $outcome;
4463: }
4464: }
4465:
4466: sub courseiddump {
4467: my ($domfilter,$descfilter,$sincefilter,$instcodefilter,$ownerfilter,
4468: $coursefilter,$hostidflag,$hostidref,$typefilter,$regexp_ok,
4469: $selfenrollonly,$catfilter,$showhidden,$caller,$cloner,$cc_clone,
4470: $cloneonly,$createdbefore,$createdafter,$creationcontext,$domcloner,
4471: $hasuniquecode,$reqcrsdom,$reqinstcode)=@_;
4472: my $as_hash = 1;
4473: my %returnhash;
4474: if (!$domfilter) { $domfilter=''; }
4475: my %libserv = &all_library();
4476: foreach my $tryserver (keys(%libserv)) {
4477: if ( ( $hostidflag == 1
4478: && grep(/^\Q$tryserver\E$/,@{$hostidref}) )
4479: || (!defined($hostidflag)) ) {
4480:
4481: if (($domfilter eq '') ||
4482: (&host_domain($tryserver) eq $domfilter)) {
4483: my $rep;
4484: if (grep { $_ eq $tryserver } current_machine_ids()) {
4485: $rep = LONCAPA::Lond::dump_course_id_handler(
4486: join(":", (&host_domain($tryserver), $sincefilter,
4487: &escape($descfilter), &escape($instcodefilter),
4488: &escape($ownerfilter), &escape($coursefilter),
4489: &escape($typefilter), &escape($regexp_ok),
4490: $as_hash, &escape($selfenrollonly),
4491: &escape($catfilter), $showhidden, $caller,
4492: &escape($cloner), &escape($cc_clone), $cloneonly,
4493: &escape($createdbefore), &escape($createdafter),
4494: &escape($creationcontext),$domcloner,$hasuniquecode,
4495: $reqcrsdom,&escape($reqinstcode))));
4496: } else {
4497: $rep = &reply('courseiddump:'.&host_domain($tryserver).':'.
4498: $sincefilter.':'.&escape($descfilter).':'.
4499: &escape($instcodefilter).':'.&escape($ownerfilter).
4500: ':'.&escape($coursefilter).':'.&escape($typefilter).
4501: ':'.&escape($regexp_ok).':'.$as_hash.':'.
4502: &escape($selfenrollonly).':'.&escape($catfilter).':'.
4503: $showhidden.':'.$caller.':'.&escape($cloner).':'.
4504: &escape($cc_clone).':'.$cloneonly.':'.
4505: &escape($createdbefore).':'.&escape($createdafter).':'.
4506: &escape($creationcontext).':'.$domcloner.':'.$hasuniquecode.
4507: ':'.$reqcrsdom.':'.&escape($reqinstcode),$tryserver);
4508: }
4509:
4510: my @pairs=split(/\&/,$rep);
4511: foreach my $item (@pairs) {
4512: my ($key,$value)=split(/\=/,$item,2);
4513: $key = &unescape($key);
4514: next if ($key =~ /^error: 2 /);
4515: my $result = &thaw_unescape($value);
4516: if (ref($result) eq 'HASH') {
4517: $returnhash{$key}=$result;
4518: } else {
4519: my @responses = split(/:/,$value);
4520: my @items = ('description','inst_code','owner','type');
4521: for (my $i=0; $i<@responses; $i++) {
4522: $returnhash{$key}{$items[$i]} = &unescape($responses[$i]);
4523: }
4524: }
4525: }
4526: }
4527: }
4528: }
4529: return %returnhash;
4530: }
4531:
4532: sub courselastaccess {
4533: my ($cdom,$cnum,$hostidref) = @_;
4534: my %returnhash;
4535: if ($cdom && $cnum) {
4536: my $chome = &homeserver($cnum,$cdom);
4537: if ($chome ne 'no_host') {
4538: my $rep = &reply('courselastaccess:'.$cdom.':'.$cnum,$chome);
4539: &extract_lastaccess(\%returnhash,$rep);
4540: }
4541: } else {
4542: if (!$cdom) { $cdom=''; }
4543: my %libserv = &all_library();
4544: foreach my $tryserver (keys(%libserv)) {
4545: if (ref($hostidref) eq 'ARRAY') {
4546: next unless (grep(/^\Q$tryserver\E$/,@{$hostidref}));
4547: }
4548: if (($cdom eq '') || (&host_domain($tryserver) eq $cdom)) {
4549: my $rep = &reply('courselastaccess:'.&host_domain($tryserver).':',$tryserver);
4550: &extract_lastaccess(\%returnhash,$rep);
4551: }
4552: }
4553: }
4554: return %returnhash;
4555: }
4556:
4557: sub extract_lastaccess {
4558: my ($returnhash,$rep) = @_;
4559: if (ref($returnhash) eq 'HASH') {
4560: unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
4561: $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
4562: $rep eq '') {
4563: my @pairs=split(/\&/,$rep);
4564: foreach my $item (@pairs) {
4565: my ($key,$value)=split(/\=/,$item,2);
4566: $key = &unescape($key);
4567: next if ($key =~ /^error: 2 /);
4568: $returnhash->{$key} = &thaw_unescape($value);
4569: }
4570: }
4571: }
4572: return;
4573: }
4574:
4575: # ---------------------------------------------------------- DC e-mail
4576:
4577: sub dcmailput {
4578: my ($domain,$msgid,$message,$server)=@_;
4579: my $status = &Apache::lonnet::critical(
4580: 'dcmailput:'.$domain.':'.&escape($msgid).'='.
4581: &escape($message),$server);
4582: return $status;
4583: }
4584:
4585: sub dcmaildump {
4586: my ($dom,$startdate,$enddate,$senders) = @_;
4587: my %returnhash=();
4588:
4589: if (defined(&domain($dom,'primary'))) {
4590: my $cmd='dcmaildump:'.$dom.':'.&escape($startdate).':'.
4591: &escape($enddate).':';
4592: my @esc_senders=map { &escape($_)} @$senders;
4593: $cmd.=&escape(join('&',@esc_senders));
4594: foreach my $line (split(/\&/,&reply($cmd,&domain($dom,'primary')))) {
4595: my ($key,$value) = split(/\=/,$line,2);
4596: if (($key) && ($value)) {
4597: $returnhash{&unescape($key)} = &unescape($value);
4598: }
4599: }
4600: }
4601: return %returnhash;
4602: }
4603: # ---------------------------------------------------------- Domain roles
4604:
4605: sub get_domain_roles {
4606: my ($dom,$roles,$startdate,$enddate)=@_;
4607: if ((!defined($startdate)) || ($startdate eq '')) {
4608: $startdate = '.';
4609: }
4610: if ((!defined($enddate)) || ($enddate eq '')) {
4611: $enddate = '.';
4612: }
4613: my $rolelist;
4614: if (ref($roles) eq 'ARRAY') {
4615: $rolelist = join('&',@{$roles});
4616: }
4617: my %personnel = ();
4618:
4619: my %servers = &get_servers($dom,'library');
4620: foreach my $tryserver (keys(%servers)) {
4621: %{$personnel{$tryserver}}=();
4622: foreach my $line (split(/\&/,&reply('domrolesdump:'.$dom.':'.
4623: &escape($startdate).':'.
4624: &escape($enddate).':'.
4625: &escape($rolelist), $tryserver))) {
4626: my ($key,$value) = split(/\=/,$line,2);
4627: if (($key) && ($value)) {
4628: $personnel{$tryserver}{&unescape($key)} = &unescape($value);
4629: }
4630: }
4631: }
4632: return %personnel;
4633: }
4634:
4635: # ----------------------------------------------------------- Interval timing
4636:
4637: {
4638: # Caches needed for speedup of navmaps
4639: # We don't want to cache this for very long at all (5 seconds at most)
4640: #
4641: # The user for whom we cache
4642: my $cachedkey='';
4643: # The cached times for this user
4644: my %cachedtimes=();
4645: # When this was last done
4646: my $cachedtime='';
4647:
4648: sub load_all_first_access {
4649: my ($uname,$udom)=@_;
4650: if (($cachedkey eq $uname.':'.$udom) &&
4651: (abs($cachedtime-time)<5) && (!$env{'form.markaccess'})) {
4652: return;
4653: }
4654: $cachedtime=time;
4655: $cachedkey=$uname.':'.$udom;
4656: %cachedtimes=&dump('firstaccesstimes',$udom,$uname);
4657: }
4658:
4659: sub get_first_access {
4660: my ($type,$argsymb,$argmap)=@_;
4661: my ($symb,$courseid,$udom,$uname)=&whichuser();
4662: if ($argsymb) { $symb=$argsymb; }
4663: my ($map,$id,$res)=&decode_symb($symb);
4664: if ($argmap) { $map = $argmap; }
4665: if ($type eq 'course') {
4666: $res='course';
4667: } elsif ($type eq 'map') {
4668: $res=&symbread($map);
4669: } else {
4670: $res=$symb;
4671: }
4672: &load_all_first_access($uname,$udom);
4673: return $cachedtimes{"$courseid\0$res"};
4674: }
4675:
4676: sub set_first_access {
4677: my ($type,$interval)=@_;
4678: my ($symb,$courseid,$udom,$uname)=&whichuser();
4679: my ($map,$id,$res)=&decode_symb($symb);
4680: if ($type eq 'course') {
4681: $res='course';
4682: } elsif ($type eq 'map') {
4683: $res=&symbread($map);
4684: } else {
4685: $res=$symb;
4686: }
4687: $cachedkey='';
4688: my $firstaccess=&get_first_access($type,$symb,$map);
4689: if (!$firstaccess) {
4690: my $start = time;
4691: my $putres = &put('firstaccesstimes',{"$courseid\0$res"=>$start},
4692: $udom,$uname);
4693: if ($putres eq 'ok') {
4694: &put('timerinterval',{"$courseid\0$res"=>$interval},
4695: $udom,$uname);
4696: &appenv(
4697: {
4698: 'course.'.$courseid.'.firstaccess.'.$res => $start,
4699: 'course.'.$courseid.'.timerinterval.'.$res => $interval,
4700: }
4701: );
4702: }
4703: return $putres;
4704: }
4705: return 'already_set';
4706: }
4707: }
4708:
4709: # --------------------------------------------- Set Expire Date for Spreadsheet
4710:
4711: sub expirespread {
4712: my ($uname,$udom,$stype,$usymb)=@_;
4713: my $cid=$env{'request.course.id'};
4714: if ($cid) {
4715: my $now=time;
4716: my $key=$uname.':'.$udom.':'.$stype.':'.$usymb;
4717: return &reply('put:'.$env{'course.'.$cid.'.domain'}.':'.
4718: $env{'course.'.$cid.'.num'}.
4719: ':nohist_expirationdates:'.
4720: &escape($key).'='.$now,
4721: $env{'course.'.$cid.'.home'})
4722: }
4723: return 'ok';
4724: }
4725:
4726: # ----------------------------------------------------- Devalidate Spreadsheets
4727:
4728: sub devalidate {
4729: my ($symb,$uname,$udom)=@_;
4730: my $cid=$env{'request.course.id'};
4731: if ($cid) {
4732: # delete the stored spreadsheets for
4733: # - the student level sheet of this user in course's homespace
4734: # - the assessment level sheet for this resource
4735: # for this user in user's homespace
4736: # - current conditional state info
4737: my $key=$uname.':'.$udom.':';
4738: my $status=
4739: &del('nohist_calculatedsheets',
4740: [$key.'studentcalc:'],
4741: $env{'course.'.$cid.'.domain'},
4742: $env{'course.'.$cid.'.num'})
4743: .' '.
4744: &del('nohist_calculatedsheets_'.$cid,
4745: [$key.'assesscalc:'.$symb],$udom,$uname);
4746: unless ($status eq 'ok ok') {
4747: &logthis('Could not devalidate spreadsheet '.
4748: $uname.' at '.$udom.' for '.
4749: $symb.': '.$status);
4750: }
4751: &delenv('user.state.'.$cid);
4752: }
4753: }
4754:
4755: sub get_scalar {
4756: my ($string,$end) = @_;
4757: my $value;
4758: if ($$string =~ s/^([^&]*?)($end)/$2/) {
4759: $value = $1;
4760: } elsif ($$string =~ s/^([^&]*?)&//) {
4761: $value = $1;
4762: }
4763: return &unescape($value);
4764: }
4765:
4766: sub array2str {
4767: my (@array) = @_;
4768: my $result=&arrayref2str(\@array);
4769: $result=~s/^__ARRAY_REF__//;
4770: $result=~s/__END_ARRAY_REF__$//;
4771: return $result;
4772: }
4773:
4774: sub arrayref2str {
4775: my ($arrayref) = @_;
4776: my $result='__ARRAY_REF__';
4777: foreach my $elem (@$arrayref) {
4778: if(ref($elem) eq 'ARRAY') {
4779: $result.=&arrayref2str($elem).'&';
4780: } elsif(ref($elem) eq 'HASH') {
4781: $result.=&hashref2str($elem).'&';
4782: } elsif(ref($elem)) {
4783: #print("Got a ref of ".(ref($elem))." skipping.");
4784: } else {
4785: $result.=&escape($elem).'&';
4786: }
4787: }
4788: $result=~s/\&$//;
4789: $result .= '__END_ARRAY_REF__';
4790: return $result;
4791: }
4792:
4793: sub hash2str {
4794: my (%hash) = @_;
4795: my $result=&hashref2str(\%hash);
4796: $result=~s/^__HASH_REF__//;
4797: $result=~s/__END_HASH_REF__$//;
4798: return $result;
4799: }
4800:
4801: sub hashref2str {
4802: my ($hashref)=@_;
4803: my $result='__HASH_REF__';
4804: foreach my $key (sort(keys(%$hashref))) {
4805: if (ref($key) eq 'ARRAY') {
4806: $result.=&arrayref2str($key).'=';
4807: } elsif (ref($key) eq 'HASH') {
4808: $result.=&hashref2str($key).'=';
4809: } elsif (ref($key)) {
4810: $result.='=';
4811: #print("Got a ref of ".(ref($key))." skipping.");
4812: } else {
4813: if (defined($key)) {$result.=&escape($key).'=';} else { last; }
4814: }
4815:
4816: if(ref($hashref->{$key}) eq 'ARRAY') {
4817: $result.=&arrayref2str($hashref->{$key}).'&';
4818: } elsif(ref($hashref->{$key}) eq 'HASH') {
4819: $result.=&hashref2str($hashref->{$key}).'&';
4820: } elsif(ref($hashref->{$key})) {
4821: $result.='&';
4822: #print("Got a ref of ".(ref($hashref->{$key}))." skipping.");
4823: } else {
4824: $result.=&escape($hashref->{$key}).'&';
4825: }
4826: }
4827: $result=~s/\&$//;
4828: $result .= '__END_HASH_REF__';
4829: return $result;
4830: }
4831:
4832: sub str2hash {
4833: my ($string)=@_;
4834: my ($hash)=&str2hashref('__HASH_REF__'.$string.'__END_HASH_REF__');
4835: return %$hash;
4836: }
4837:
4838: sub str2hashref {
4839: my ($string) = @_;
4840:
4841: my %hash;
4842:
4843: if($string !~ /^__HASH_REF__/) {
4844: if (! ($string eq '' || !defined($string))) {
4845: $hash{'error'}='Not hash reference';
4846: }
4847: return (\%hash, $string);
4848: }
4849:
4850: $string =~ s/^__HASH_REF__//;
4851:
4852: while($string !~ /^__END_HASH_REF__/) {
4853: #key
4854: my $key='';
4855: if($string =~ /^__HASH_REF__/) {
4856: ($key, $string)=&str2hashref($string);
4857: if(defined($key->{'error'})) {
4858: $hash{'error'}='Bad data';
4859: return (\%hash, $string);
4860: }
4861: } elsif($string =~ /^__ARRAY_REF__/) {
4862: ($key, $string)=&str2arrayref($string);
4863: if($key->[0] eq 'Array reference error') {
4864: $hash{'error'}='Bad data';
4865: return (\%hash, $string);
4866: }
4867: } else {
4868: $string =~ s/^(.*?)=//;
4869: $key=&unescape($1);
4870: }
4871: $string =~ s/^=//;
4872:
4873: #value
4874: my $value='';
4875: if($string =~ /^__HASH_REF__/) {
4876: ($value, $string)=&str2hashref($string);
4877: if(defined($value->{'error'})) {
4878: $hash{'error'}='Bad data';
4879: return (\%hash, $string);
4880: }
4881: } elsif($string =~ /^__ARRAY_REF__/) {
4882: ($value, $string)=&str2arrayref($string);
4883: if($value->[0] eq 'Array reference error') {
4884: $hash{'error'}='Bad data';
4885: return (\%hash, $string);
4886: }
4887: } else {
4888: $value=&get_scalar(\$string,'__END_HASH_REF__');
4889: }
4890: $string =~ s/^&//;
4891:
4892: $hash{$key}=$value;
4893: }
4894:
4895: $string =~ s/^__END_HASH_REF__//;
4896:
4897: return (\%hash, $string);
4898: }
4899:
4900: sub str2array {
4901: my ($string)=@_;
4902: my ($array)=&str2arrayref('__ARRAY_REF__'.$string.'__END_ARRAY_REF__');
4903: return @$array;
4904: }
4905:
4906: sub str2arrayref {
4907: my ($string) = @_;
4908: my @array;
4909:
4910: if($string !~ /^__ARRAY_REF__/) {
4911: if (! ($string eq '' || !defined($string))) {
4912: $array[0]='Array reference error';
4913: }
4914: return (\@array, $string);
4915: }
4916:
4917: $string =~ s/^__ARRAY_REF__//;
4918:
4919: while($string !~ /^__END_ARRAY_REF__/) {
4920: my $value='';
4921: if($string =~ /^__HASH_REF__/) {
4922: ($value, $string)=&str2hashref($string);
4923: if(defined($value->{'error'})) {
4924: $array[0] ='Array reference error';
4925: return (\@array, $string);
4926: }
4927: } elsif($string =~ /^__ARRAY_REF__/) {
4928: ($value, $string)=&str2arrayref($string);
4929: if($value->[0] eq 'Array reference error') {
4930: $array[0] ='Array reference error';
4931: return (\@array, $string);
4932: }
4933: } else {
4934: $value=&get_scalar(\$string,'__END_ARRAY_REF__');
4935: }
4936: $string =~ s/^&//;
4937:
4938: push(@array, $value);
4939: }
4940:
4941: $string =~ s/^__END_ARRAY_REF__//;
4942:
4943: return (\@array, $string);
4944: }
4945:
4946: # -------------------------------------------------------------------Temp Store
4947:
4948: sub tmpreset {
4949: my ($symb,$namespace,$domain,$stuname) = @_;
4950: if (!$symb) {
4951: $symb=&symbread();
4952: if (!$symb) { $symb= $env{'request.url'}; }
4953: }
4954: $symb=escape($symb);
4955:
4956: if (!$namespace) { $namespace=$env{'request.state'}; }
4957: $namespace=~s/\//\_/g;
4958: $namespace=~s/\W//g;
4959:
4960: if (!$domain) { $domain=$env{'user.domain'}; }
4961: if (!$stuname) { $stuname=$env{'user.name'}; }
4962: if ($domain eq 'public' && $stuname eq 'public') {
4963: $stuname=$ENV{'REMOTE_ADDR'};
4964: }
4965: my $path=LONCAPA::tempdir();
4966: my %hash;
4967: if (tie(%hash,'GDBM_File',
4968: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
4969: &GDBM_WRCREAT(),0640)) {
4970: foreach my $key (keys(%hash)) {
4971: if ($key=~ /:$symb/) {
4972: delete($hash{$key});
4973: }
4974: }
4975: }
4976: }
4977:
4978: sub tmpstore {
4979: my ($storehash,$symb,$namespace,$domain,$stuname) = @_;
4980:
4981: if (!$symb) {
4982: $symb=&symbread();
4983: if (!$symb) { $symb= $env{'request.url'}; }
4984: }
4985: $symb=escape($symb);
4986:
4987: if (!$namespace) {
4988: # I don't think we would ever want to store this for a course.
4989: # it seems this will only be used if we don't have a course.
4990: #$namespace=$env{'request.course.id'};
4991: #if (!$namespace) {
4992: $namespace=$env{'request.state'};
4993: #}
4994: }
4995: $namespace=~s/\//\_/g;
4996: $namespace=~s/\W//g;
4997: if (!$domain) { $domain=$env{'user.domain'}; }
4998: if (!$stuname) { $stuname=$env{'user.name'}; }
4999: if ($domain eq 'public' && $stuname eq 'public') {
5000: $stuname=$ENV{'REMOTE_ADDR'};
5001: }
5002: my $now=time;
5003: my %hash;
5004: my $path=LONCAPA::tempdir();
5005: if (tie(%hash,'GDBM_File',
5006: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5007: &GDBM_WRCREAT(),0640)) {
5008: $hash{"version:$symb"}++;
5009: my $version=$hash{"version:$symb"};
5010: my $allkeys='';
5011: foreach my $key (keys(%$storehash)) {
5012: $allkeys.=$key.':';
5013: $hash{"$version:$symb:$key"}=&freeze_escape($$storehash{$key});
5014: }
5015: $hash{"$version:$symb:timestamp"}=$now;
5016: $allkeys.='timestamp';
5017: $hash{"$version:keys:$symb"}=$allkeys;
5018: if (untie(%hash)) {
5019: return 'ok';
5020: } else {
5021: return "error:$!";
5022: }
5023: } else {
5024: return "error:$!";
5025: }
5026: }
5027:
5028: # -----------------------------------------------------------------Temp Restore
5029:
5030: sub tmprestore {
5031: my ($symb,$namespace,$domain,$stuname) = @_;
5032:
5033: if (!$symb) {
5034: $symb=&symbread();
5035: if (!$symb) { $symb= $env{'request.url'}; }
5036: }
5037: $symb=escape($symb);
5038:
5039: if (!$namespace) { $namespace=$env{'request.state'}; }
5040:
5041: if (!$domain) { $domain=$env{'user.domain'}; }
5042: if (!$stuname) { $stuname=$env{'user.name'}; }
5043: if ($domain eq 'public' && $stuname eq 'public') {
5044: $stuname=$ENV{'REMOTE_ADDR'};
5045: }
5046: my %returnhash;
5047: $namespace=~s/\//\_/g;
5048: $namespace=~s/\W//g;
5049: my %hash;
5050: my $path=LONCAPA::tempdir();
5051: if (tie(%hash,'GDBM_File',
5052: $path.'/tmpstore_'.$stuname.'_'.$domain.'_'.$namespace.'.db',
5053: &GDBM_READER(),0640)) {
5054: my $version=$hash{"version:$symb"};
5055: $returnhash{'version'}=$version;
5056: my $scope;
5057: for ($scope=1;$scope<=$version;$scope++) {
5058: my $vkeys=$hash{"$scope:keys:$symb"};
5059: my @keys=split(/:/,$vkeys);
5060: my $key;
5061: $returnhash{"$scope:keys"}=$vkeys;
5062: foreach $key (@keys) {
5063: $returnhash{"$scope:$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
5064: $returnhash{"$key"}=&thaw_unescape($hash{"$scope:$symb:$key"});
5065: }
5066: }
5067: if (!(untie(%hash))) {
5068: return "error:$!";
5069: }
5070: } else {
5071: return "error:$!";
5072: }
5073: return %returnhash;
5074: }
5075:
5076: # ----------------------------------------------------------------------- Store
5077:
5078: sub store {
5079: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
5080: my $home='';
5081:
5082: if ($stuname) { $home=&homeserver($stuname,$domain); }
5083:
5084: $symb=&symbclean($symb);
5085: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
5086:
5087: if (!$domain) { $domain=$env{'user.domain'}; }
5088: if (!$stuname) { $stuname=$env{'user.name'}; }
5089:
5090: &devalidate($symb,$stuname,$domain);
5091:
5092: $symb=escape($symb);
5093: if (!$namespace) {
5094: unless ($namespace=$env{'request.course.id'}) {
5095: return '';
5096: }
5097: }
5098: if (!$home) { $home=$env{'user.home'}; }
5099:
5100: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
5101: $$storehash{'host'}=$perlvar{'lonHostID'};
5102:
5103: my $namevalue='';
5104: foreach my $key (keys(%$storehash)) {
5105: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5106: }
5107: $namevalue=~s/\&$//;
5108: &courselog($symb.':'.$stuname.':'.$domain.':STORE:'.$namevalue);
5109: return reply("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
5110: }
5111:
5112: # -------------------------------------------------------------- Critical Store
5113:
5114: sub cstore {
5115: my ($storehash,$symb,$namespace,$domain,$stuname,$laststore) = @_;
5116: my $home='';
5117:
5118: if ($stuname) { $home=&homeserver($stuname,$domain); }
5119:
5120: $symb=&symbclean($symb);
5121: if (!$symb) { unless ($symb=&symbread()) { return ''; } }
5122:
5123: if (!$domain) { $domain=$env{'user.domain'}; }
5124: if (!$stuname) { $stuname=$env{'user.name'}; }
5125:
5126: &devalidate($symb,$stuname,$domain);
5127:
5128: $symb=escape($symb);
5129: if (!$namespace) {
5130: unless ($namespace=$env{'request.course.id'}) {
5131: return '';
5132: }
5133: }
5134: if (!$home) { $home=$env{'user.home'}; }
5135:
5136: $$storehash{'ip'}=$ENV{'REMOTE_ADDR'};
5137: $$storehash{'host'}=$perlvar{'lonHostID'};
5138:
5139: my $namevalue='';
5140: foreach my $key (keys(%$storehash)) {
5141: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
5142: }
5143: $namevalue=~s/\&$//;
5144: &courselog($symb.':'.$stuname.':'.$domain.':CSTORE:'.$namevalue);
5145: return critical
5146: ("store:$domain:$stuname:$namespace:$symb:$namevalue:$laststore","$home");
5147: }
5148:
5149: # --------------------------------------------------------------------- Restore
5150:
5151: sub restore {
5152: my ($symb,$namespace,$domain,$stuname) = @_;
5153: my $home='';
5154:
5155: if ($stuname) { $home=&homeserver($stuname,$domain); }
5156:
5157: if (!$symb) {
5158: return if ($namespace eq 'courserequests');
5159: unless ($symb=escape(&symbread())) { return ''; }
5160: } else {
5161: unless ($namespace eq 'courserequests') {
5162: $symb=&escape(&symbclean($symb));
5163: }
5164: }
5165: if (!$namespace) {
5166: unless ($namespace=$env{'request.course.id'}) {
5167: return '';
5168: }
5169: }
5170: if (!$domain) { $domain=$env{'user.domain'}; }
5171: if (!$stuname) { $stuname=$env{'user.name'}; }
5172: if (!$home) { $home=$env{'user.home'}; }
5173: my $answer=&reply("restore:$domain:$stuname:$namespace:$symb","$home");
5174:
5175: my %returnhash=();
5176: foreach my $line (split(/\&/,$answer)) {
5177: my ($name,$value)=split(/\=/,$line);
5178: $returnhash{&unescape($name)}=&thaw_unescape($value);
5179: }
5180: my $version;
5181: for ($version=1;$version<=$returnhash{'version'};$version++) {
5182: foreach my $item (split(/\:/,$returnhash{$version.':keys'})) {
5183: $returnhash{$item}=$returnhash{$version.':'.$item};
5184: }
5185: }
5186: return %returnhash;
5187: }
5188:
5189: # ---------------------------------------------------------- Course Description
5190: #
5191: #
5192:
5193: sub coursedescription {
5194: my ($courseid,$args)=@_;
5195: $courseid=~s/^\///;
5196: $courseid=~s/\_/\//g;
5197: my ($cdomain,$cnum)=split(/\//,$courseid);
5198: my $chome=&homeserver($cnum,$cdomain);
5199: my $normalid=$cdomain.'_'.$cnum;
5200: # need to always cache even if we get errors otherwise we keep
5201: # trying and trying and trying to get the course description.
5202: my %envhash=();
5203: my %returnhash=();
5204:
5205: my $expiretime=600;
5206: if ($env{'request.course.id'} eq $normalid) {
5207: $expiretime=120;
5208: }
5209:
5210: my $prefix='course.'.$cdomain.'_'.$cnum.'.';
5211: if (!$args->{'freshen_cache'}
5212: && ((time-$env{$prefix.'last_cache'}) < $expiretime) ) {
5213: foreach my $key (keys(%env)) {
5214: next if ($key !~ /^\Q$prefix\E(.*)/);
5215: my ($setting) = $1;
5216: $returnhash{$setting} = $env{$key};
5217: }
5218: return %returnhash;
5219: }
5220:
5221: # get the data again
5222:
5223: if (!$args->{'one_time'}) {
5224: $envhash{'course.'.$normalid.'.last_cache'}=time;
5225: }
5226:
5227: if ($chome ne 'no_host') {
5228: %returnhash=&dump('environment',$cdomain,$cnum);
5229: if (!exists($returnhash{'con_lost'})) {
5230: my $username = $env{'user.name'}; # Defult username
5231: if(defined $args->{'user'}) {
5232: $username = $args->{'user'};
5233: }
5234: $returnhash{'home'}= $chome;
5235: $returnhash{'domain'} = $cdomain;
5236: $returnhash{'num'} = $cnum;
5237: if (!defined($returnhash{'type'})) {
5238: $returnhash{'type'} = 'Course';
5239: }
5240: while (my ($name,$value) = each %returnhash) {
5241: $envhash{'course.'.$normalid.'.'.$name}=$value;
5242: }
5243: $returnhash{'url'}=&clutter($returnhash{'url'});
5244: $returnhash{'fn'}=LONCAPA::tempdir() .
5245: $username.'_'.$cdomain.'_'.$cnum;
5246: $envhash{'course.'.$normalid.'.home'}=$chome;
5247: $envhash{'course.'.$normalid.'.domain'}=$cdomain;
5248: $envhash{'course.'.$normalid.'.num'}=$cnum;
5249: }
5250: }
5251: if (!$args->{'one_time'}) {
5252: &appenv(\%envhash);
5253: }
5254: return %returnhash;
5255: }
5256:
5257: sub update_released_required {
5258: my ($needsrelease,$cdom,$cnum,$chome,$cid) = @_;
5259: if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
5260: $cid = $env{'request.course.id'};
5261: $cdom = $env{'course.'.$cid.'.domain'};
5262: $cnum = $env{'course.'.$cid.'.num'};
5263: $chome = $env{'course.'.$cid.'.home'};
5264: }
5265: if ($needsrelease) {
5266: my %curr_reqd_hash = &userenvironment($cdom,$cnum,'internal.releaserequired');
5267: my $needsupdate;
5268: if ($curr_reqd_hash{'internal.releaserequired'} eq '') {
5269: $needsupdate = 1;
5270: } else {
5271: my ($currmajor,$currminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
5272: my ($needsmajor,$needsminor) = split(/\./,$needsrelease);
5273: if (($currmajor < $needsmajor) || ($currmajor == $needsmajor && $currminor < $needsminor)) {
5274: $needsupdate = 1;
5275: }
5276: }
5277: if ($needsupdate) {
5278: my %needshash = (
5279: 'internal.releaserequired' => $needsrelease,
5280: );
5281: my $putresult = &put('environment',\%needshash,$cdom,$cnum);
5282: if ($putresult eq 'ok') {
5283: &appenv({'course.'.$cid.'.internal.releaserequired' => $needsrelease});
5284: my %crsinfo = &courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
5285: if (ref($crsinfo{$cid}) eq 'HASH') {
5286: $crsinfo{$cid}{'releaserequired'} = $needsrelease;
5287: &courseidput($cdom,\%crsinfo,$chome,'notime');
5288: }
5289: }
5290: }
5291: }
5292: return;
5293: }
5294:
5295: # -------------------------------------------------See if a user is privileged
5296:
5297: sub privileged {
5298: my ($username,$domain,$possdomains,$possroles)=@_;
5299: my $now = time;
5300: my $roles;
5301: if (ref($possroles) eq 'ARRAY') {
5302: $roles = $possroles;
5303: } else {
5304: $roles = ['dc','su'];
5305: }
5306: if (ref($possdomains) eq 'ARRAY') {
5307: my %privileged = &privileged_by_domain($possdomains,$roles);
5308: foreach my $dom (@{$possdomains}) {
5309: if (($username =~ /^$match_username$/) && ($domain =~ /^$match_domain$/) &&
5310: (ref($privileged{$dom}) eq 'HASH')) {
5311: foreach my $role (@{$roles}) {
5312: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5313: if (exists($privileged{$dom}{$role}{$username.':'.$domain})) {
5314: my ($end,$start) = split(/:/,$privileged{$dom}{$role}{$username.':'.$domain});
5315: return 1 unless (($end && $end < $now) ||
5316: ($start && $start > $now));
5317: }
5318: }
5319: }
5320: }
5321: }
5322: } else {
5323: my %rolesdump = &dump("roles", $domain, $username) or return 0;
5324: my $now = time;
5325:
5326: for my $role (@rolesdump{grep { ! /^rolesdef_/ } keys(%rolesdump)}) {
5327: my ($trole, $tend, $tstart) = split(/_/, $role);
5328: if (grep(/^\Q$trole\E$/,@{$roles})) {
5329: return 1 unless ($tend && $tend < $now)
5330: or ($tstart && $tstart > $now);
5331: }
5332: }
5333: }
5334: return 0;
5335: }
5336:
5337: sub privileged_by_domain {
5338: my ($domains,$roles) = @_;
5339: my %privileged = ();
5340: my $cachetime = 60*60*24;
5341: my $now = time;
5342: unless ((ref($domains) eq 'ARRAY') && (ref($roles) eq 'ARRAY')) {
5343: return %privileged;
5344: }
5345: foreach my $dom (@{$domains}) {
5346: next if (ref($privileged{$dom}) eq 'HASH');
5347: my $needroles;
5348: foreach my $role (@{$roles}) {
5349: my ($result,$cached)=&is_cached_new('priv_'.$role,$dom);
5350: if (defined($cached)) {
5351: if (ref($result) eq 'HASH') {
5352: $privileged{$dom}{$role} = $result;
5353: }
5354: } else {
5355: $needroles = 1;
5356: }
5357: }
5358: if ($needroles) {
5359: my %dompersonnel = &get_domain_roles($dom,$roles);
5360: $privileged{$dom} = {};
5361: foreach my $server (keys(%dompersonnel)) {
5362: if (ref($dompersonnel{$server}) eq 'HASH') {
5363: foreach my $item (keys(%{$dompersonnel{$server}})) {
5364: my ($trole,$uname,$udom,$rest) = split(/:/,$item,4);
5365: my ($end,$start) = split(/:/,$dompersonnel{$server}{$item});
5366: next if ($end && $end < $now);
5367: $privileged{$dom}{$trole}{$uname.':'.$udom} =
5368: $dompersonnel{$server}{$item};
5369: }
5370: }
5371: }
5372: if (ref($privileged{$dom}) eq 'HASH') {
5373: foreach my $role (@{$roles}) {
5374: if (ref($privileged{$dom}{$role}) eq 'HASH') {
5375: &do_cache_new('priv_'.$role,$dom,$privileged{$dom}{$role},$cachetime);
5376: } else {
5377: my %hash = ();
5378: &do_cache_new('priv_'.$role,$dom,\%hash,$cachetime);
5379: }
5380: }
5381: }
5382: }
5383: }
5384: return %privileged;
5385: }
5386:
5387: # -------------------------------------------------------- Get user privileges
5388:
5389: sub rolesinit {
5390: my ($domain, $username) = @_;
5391: my %userroles = ('user.login.time' => time);
5392: my %rolesdump = &dump("roles", $domain, $username) or return \%userroles;
5393:
5394: # firstaccess and timerinterval are related to timed maps/resources.
5395: # also, blocking can be triggered by an activating timer
5396: # it's saved in the user's %env.
5397: my %firstaccess = &dump('firstaccesstimes', $domain, $username);
5398: my %timerinterval = &dump('timerinterval', $domain, $username);
5399: my (%coursetimerstarts, %firstaccchk, %firstaccenv, %coursetimerintervals,
5400: %timerintchk, %timerintenv);
5401:
5402: foreach my $key (keys(%firstaccess)) {
5403: my ($cid, $rest) = split(/\0/, $key);
5404: $coursetimerstarts{$cid}{$rest} = $firstaccess{$key};
5405: }
5406:
5407: foreach my $key (keys(%timerinterval)) {
5408: my ($cid,$rest) = split(/\0/,$key);
5409: $coursetimerintervals{$cid}{$rest} = $timerinterval{$key};
5410: }
5411:
5412: my %allroles=();
5413: my %allgroups=();
5414:
5415: for my $area (grep { ! /^rolesdef_/ } keys(%rolesdump)) {
5416: my $role = $rolesdump{$area};
5417: $area =~ s/\_\w\w$//;
5418:
5419: my ($trole, $tend, $tstart, $group_privs);
5420:
5421: if ($role =~ /^cr/) {
5422: # Custom role, defined by a user
5423: # e.g., user.role.cr/msu/smith/mynewrole
5424: if ($role =~ m|^(cr/$match_domain/$match_username/[a-zA-Z0-9]+)_(.*)$|) {
5425: $trole = $1;
5426: ($tend, $tstart) = split('_', $2);
5427: } else {
5428: $trole = $role;
5429: }
5430: } elsif ($role =~ m|^gr/|) {
5431: # Role of member in a group, defined within a course/community
5432: # e.g., user.role.gr/msu/04935610a19ee4a5fmsul1/leopards
5433: ($trole, $tend, $tstart) = split(/_/, $role);
5434: next if $tstart eq '-1';
5435: ($trole, $group_privs) = split(/\//, $trole);
5436: $group_privs = &unescape($group_privs);
5437: } else {
5438: # Just a normal role, defined in roles.tab
5439: ($trole, $tend, $tstart) = split(/_/,$role);
5440: }
5441:
5442: my %new_role = &set_arearole($trole,$area,$tstart,$tend,$domain,
5443: $username);
5444: @userroles{keys(%new_role)} = @new_role{keys(%new_role)};
5445:
5446: # role expired or not available yet?
5447: $trole = '' if ($tend != 0 && $tend < $userroles{'user.login.time'}) or
5448: ($tstart != 0 && $tstart > $userroles{'user.login.time'});
5449:
5450: next if $area eq '' or $trole eq '';
5451:
5452: my $spec = "$trole.$area";
5453: my ($tdummy, $tdomain, $trest) = split(/\//, $area);
5454:
5455: if ($trole =~ /^cr\//) {
5456: # Custom role, defined by a user
5457: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
5458: } elsif ($trole eq 'gr') {
5459: # Role of a member in a group, defined within a course/community
5460: &group_roleprivs(\%allgroups,$area,$group_privs,$tend,$tstart);
5461: next;
5462: } else {
5463: # Normal role, defined in roles.tab
5464: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
5465: }
5466:
5467: my $cid = $tdomain.'_'.$trest;
5468: unless ($firstaccchk{$cid}) {
5469: if (ref($coursetimerstarts{$cid}) eq 'HASH') {
5470: foreach my $item (keys(%{$coursetimerstarts{$cid}})) {
5471: $firstaccenv{'course.'.$cid.'.firstaccess.'.$item} =
5472: $coursetimerstarts{$cid}{$item};
5473: }
5474: }
5475: $firstaccchk{$cid} = 1;
5476: }
5477: unless ($timerintchk{$cid}) {
5478: if (ref($coursetimerintervals{$cid}) eq 'HASH') {
5479: foreach my $item (keys(%{$coursetimerintervals{$cid}})) {
5480: $timerintenv{'course.'.$cid.'.timerinterval.'.$item} =
5481: $coursetimerintervals{$cid}{$item};
5482: }
5483: }
5484: $timerintchk{$cid} = 1;
5485: }
5486: }
5487:
5488: @userroles{'user.author', 'user.adv'} = &set_userprivs(\%userroles,
5489: \%allroles, \%allgroups);
5490: $env{'user.adv'} = $userroles{'user.adv'};
5491:
5492: return (\%userroles,\%firstaccenv,\%timerintenv);
5493: }
5494:
5495: sub set_arearole {
5496: my ($trole,$area,$tstart,$tend,$domain,$username,$nolog) = @_;
5497: unless ($nolog) {
5498: # log the associated role with the area
5499: &userrolelog($trole,$username,$domain,$area,$tstart,$tend);
5500: }
5501: return ('user.role.'.$trole.'.'.$area => $tstart.'.'.$tend);
5502: }
5503:
5504: sub custom_roleprivs {
5505: my ($allroles,$trole,$tdomain,$trest,$spec,$area) = @_;
5506: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$trole);
5507: my $homsvr = &homeserver($rauthor,$rdomain);
5508: if (&hostname($homsvr) ne '') {
5509: my ($rdummy,$roledef)=
5510: &get('roles',["rolesdef_$rrole"],$rdomain,$rauthor);
5511: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
5512: my ($syspriv,$dompriv,$coursepriv)=split(/\_/,$roledef);
5513: if (defined($syspriv)) {
5514: if ($trest =~ /^$match_community$/) {
5515: $syspriv =~ s/bre\&S//;
5516: }
5517: $$allroles{'cm./'}.=':'.$syspriv;
5518: $$allroles{$spec.'./'}.=':'.$syspriv;
5519: }
5520: if ($tdomain ne '') {
5521: if (defined($dompriv)) {
5522: $$allroles{'cm./'.$tdomain.'/'}.=':'.$dompriv;
5523: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$dompriv;
5524: }
5525: if (($trest ne '') && (defined($coursepriv))) {
5526: $$allroles{'cm.'.$area}.=':'.$coursepriv;
5527: $$allroles{$spec.'.'.$area}.=':'.$coursepriv;
5528: }
5529: }
5530: }
5531: }
5532: }
5533:
5534: sub group_roleprivs {
5535: my ($allgroups,$area,$group_privs,$tend,$tstart) = @_;
5536: my $access = 1;
5537: my $now = time;
5538: if (($tend!=0) && ($tend<$now)) { $access = 0; }
5539: if (($tstart!=0) && ($tstart>$now)) { $access=0; }
5540: if ($access) {
5541: my ($course,$group) = ($area =~ m|(/$match_domain/$match_courseid)/([^/]+)$|);
5542: $$allgroups{$course}{$group} .=':'.$group_privs;
5543: }
5544: }
5545:
5546: sub standard_roleprivs {
5547: my ($allroles,$trole,$tdomain,$spec,$trest,$area) = @_;
5548: if (defined($pr{$trole.':s'})) {
5549: $$allroles{'cm./'}.=':'.$pr{$trole.':s'};
5550: $$allroles{$spec.'./'}.=':'.$pr{$trole.':s'};
5551: }
5552: if ($tdomain ne '') {
5553: if (defined($pr{$trole.':d'})) {
5554: $$allroles{'cm./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5555: $$allroles{$spec.'./'.$tdomain.'/'}.=':'.$pr{$trole.':d'};
5556: }
5557: if (($trest ne '') && (defined($pr{$trole.':c'}))) {
5558: $$allroles{'cm.'.$area}.=':'.$pr{$trole.':c'};
5559: $$allroles{$spec.'.'.$area}.=':'.$pr{$trole.':c'};
5560: }
5561: }
5562: }
5563:
5564: sub set_userprivs {
5565: my ($userroles,$allroles,$allgroups,$groups_roles) = @_;
5566: my $author=0;
5567: my $adv=0;
5568: my %grouproles = ();
5569: if (keys(%{$allgroups}) > 0) {
5570: my @groupkeys;
5571: foreach my $role (keys(%{$allroles})) {
5572: push(@groupkeys,$role);
5573: }
5574: if (ref($groups_roles) eq 'HASH') {
5575: foreach my $key (keys(%{$groups_roles})) {
5576: unless (grep(/^\Q$key\E$/,@groupkeys)) {
5577: push(@groupkeys,$key);
5578: }
5579: }
5580: }
5581: if (@groupkeys > 0) {
5582: foreach my $role (@groupkeys) {
5583: my ($trole,$area,$sec,$extendedarea);
5584: if ($role =~ m-^(\w+|cr/$match_domain/$match_username/\w+)\.(/$match_domain/$match_courseid)(/?\w*)\.-) {
5585: $trole = $1;
5586: $area = $2;
5587: $sec = $3;
5588: $extendedarea = $area.$sec;
5589: if (exists($$allgroups{$area})) {
5590: foreach my $group (keys(%{$$allgroups{$area}})) {
5591: my $spec = $trole.'.'.$extendedarea;
5592: $grouproles{$spec.'.'.$area.'/'.$group} =
5593: $$allgroups{$area}{$group};
5594: }
5595: }
5596: }
5597: }
5598: }
5599: }
5600: foreach my $group (keys(%grouproles)) {
5601: $$allroles{$group} = $grouproles{$group};
5602: }
5603: foreach my $role (keys(%{$allroles})) {
5604: my %thesepriv;
5605: if (($role=~/^au/) || ($role=~/^ca/) || ($role=~/^aa/)) { $author=1; }
5606: foreach my $item (split(/:/,$$allroles{$role})) {
5607: if ($item ne '') {
5608: my ($privilege,$restrictions)=split(/&/,$item);
5609: if ($restrictions eq '') {
5610: $thesepriv{$privilege}='F';
5611: } elsif ($thesepriv{$privilege} ne 'F') {
5612: $thesepriv{$privilege}.=$restrictions;
5613: }
5614: if ($thesepriv{'adv'} eq 'F') { $adv=1; }
5615: }
5616: }
5617: my $thesestr='';
5618: foreach my $priv (sort(keys(%thesepriv))) {
5619: $thesestr.=':'.$priv.'&'.$thesepriv{$priv};
5620: }
5621: $userroles->{'user.priv.'.$role} = $thesestr;
5622: }
5623: return ($author,$adv);
5624: }
5625:
5626: sub role_status {
5627: my ($rolekey,$update,$refresh,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_;
5628: if (exists($env{$rolekey}) && $env{$rolekey} ne '') {
5629: my ($one,$two) = split(m{\./},$rolekey,2);
5630: (undef,undef,$$role) = split(/\./,$one,3);
5631: unless (!defined($$role) || $$role eq '') {
5632: $$where = '/'.$two;
5633: $$trolecode=$$role.'.'.$$where;
5634: ($$tstart,$$tend)=split(/\./,$env{$rolekey});
5635: $$tstatus='is';
5636: if ($$tstart && $$tstart>$update) {
5637: $$tstatus='future';
5638: if ($$tstart<$now) {
5639: if ($$tstart && $$tstart>$refresh) {
5640: if (($$where ne '') && ($$role ne '')) {
5641: my (%allroles,%allgroups,$group_privs,
5642: %groups_roles,@rolecodes);
5643: my %userroles = (
5644: 'user.role.'.$$role.'.'.$$where => $$tstart.'.'.$$tend
5645: );
5646: @rolecodes = ('cm');
5647: my $spec=$$role.'.'.$$where;
5648: my ($tdummy,$tdomain,$trest)=split(/\//,$$where);
5649: if ($$role =~ /^cr\//) {
5650: &custom_roleprivs(\%allroles,$$role,$tdomain,$trest,$spec,$$where);
5651: push(@rolecodes,'cr');
5652: } elsif ($$role eq 'gr') {
5653: push(@rolecodes,$$role);
5654: my %rolehash = &get('roles',[$$where.'_'.$$role],$env{'user.domain'},
5655: $env{'user.name'});
5656: my ($trole) = split('_',$rolehash{$$where.'_'.$$role},2);
5657: (undef,my $group_privs) = split(/\//,$trole);
5658: $group_privs = &unescape($group_privs);
5659: &group_roleprivs(\%allgroups,$$where,$group_privs,$$tend,$$tstart);
5660: my %course_roles = &get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',['active'],['cc','co','in','ta','ep','ad','st','cr'],[$tdomain],1);
5661: &get_groups_roles($tdomain,$trest,
5662: \%course_roles,\@rolecodes,
5663: \%groups_roles);
5664: } else {
5665: push(@rolecodes,$$role);
5666: &standard_roleprivs(\%allroles,$$role,$tdomain,$spec,$trest,$$where);
5667: }
5668: my ($author,$adv)= &set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
5669: &appenv(\%userroles,\@rolecodes);
5670: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5671: }
5672: }
5673: $$tstatus = 'is';
5674: }
5675: }
5676: if ($$tend) {
5677: if ($$tend<$update) {
5678: $$tstatus='expired';
5679: } elsif ($$tend<$now) {
5680: $$tstatus='will_not';
5681: }
5682: }
5683: }
5684: }
5685: }
5686:
5687: sub get_groups_roles {
5688: my ($cdom,$rest,$cdom_courseroles,$rolecodes,$groups_roles) = @_;
5689: return unless((ref($cdom_courseroles) eq 'HASH') &&
5690: (ref($rolecodes) eq 'ARRAY') &&
5691: (ref($groups_roles) eq 'HASH'));
5692: if (keys(%{$cdom_courseroles}) > 0) {
5693: my ($cnum) = ($rest =~ /^($match_courseid)/);
5694: if ($cdom ne '' && $cnum ne '') {
5695: foreach my $key (keys(%{$cdom_courseroles})) {
5696: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:([^:]+):?([^:]*)/) {
5697: my $crsrole = $1;
5698: my $crssec = $2;
5699: if ($crsrole =~ /^cr/) {
5700: unless (grep(/^cr$/,@{$rolecodes})) {
5701: push(@{$rolecodes},'cr');
5702: }
5703: } else {
5704: unless(grep(/^\Q$crsrole\E$/,@{$rolecodes})) {
5705: push(@{$rolecodes},$crsrole);
5706: }
5707: }
5708: my $rolekey = "$crsrole./$cdom/$cnum";
5709: if ($crssec ne '') {
5710: $rolekey .= "/$crssec";
5711: }
5712: $rolekey .= './';
5713: $groups_roles->{$rolekey} = $rolecodes;
5714: }
5715: }
5716: }
5717: }
5718: return;
5719: }
5720:
5721: sub delete_env_groupprivs {
5722: my ($where,$courseroles,$possroles) = @_;
5723: return unless((ref($courseroles) eq 'HASH') && (ref($possroles) eq 'ARRAY'));
5724: my ($dummy,$udom,$uname,$group) = split(/\//,$where);
5725: unless (ref($courseroles->{$udom}) eq 'HASH') {
5726: %{$courseroles->{$udom}} =
5727: &get_my_roles('','','userroles',['active'],
5728: $possroles,[$udom],1);
5729: }
5730: if (ref($courseroles->{$udom}) eq 'HASH') {
5731: foreach my $item (keys(%{$courseroles->{$udom}})) {
5732: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
5733: my $area = '/'.$cdom.'/'.$cnum;
5734: my $privkey = "user.priv.$crsrole.$area";
5735: if ($crssec ne '') {
5736: $privkey .= '/'.$crssec;
5737: }
5738: $privkey .= ".$area/$group";
5739: &Apache::lonnet::delenv($privkey,undef,[$crsrole]);
5740: }
5741: }
5742: return;
5743: }
5744:
5745: sub check_adhoc_privs {
5746: my ($cdom,$cnum,$update,$refresh,$now,$checkrole,$caller) = @_;
5747: my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum;
5748: my $setprivs;
5749: if ($env{$cckey}) {
5750: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
5751: &role_status($cckey,$update,$refresh,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend);
5752: unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) {
5753: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5754: $setprivs = 1;
5755: }
5756: } else {
5757: &set_adhoc_privileges($cdom,$cnum,$checkrole,$caller);
5758: $setprivs = 1;
5759: }
5760: return $setprivs;
5761: }
5762:
5763: sub set_adhoc_privileges {
5764: # role can be cc or ca
5765: my ($dcdom,$pickedcourse,$role,$caller) = @_;
5766: my $area = '/'.$dcdom.'/'.$pickedcourse;
5767: my $spec = $role.'.'.$area;
5768: my %userroles = &set_arearole($role,$area,'','',$env{'user.domain'},
5769: $env{'user.name'},1);
5770: my %ccrole = ();
5771: &standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area);
5772: my ($author,$adv)= &set_userprivs(\%userroles,\%ccrole);
5773: &appenv(\%userroles,[$role,'cm']);
5774: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},"Role ".$role);
5775: unless ($caller eq 'constructaccess' && $env{'request.course.id'}) {
5776: &appenv( {'request.role' => $spec,
5777: 'request.role.domain' => $dcdom,
5778: 'request.course.sec' => ''
5779: }
5780: );
5781: my $tadv=0;
5782: if (&allowed('adv') eq 'F') { $tadv=1; }
5783: &appenv({'request.role.adv' => $tadv});
5784: }
5785: }
5786:
5787: # --------------------------------------------------------------- get interface
5788:
5789: sub get {
5790: my ($namespace,$storearr,$udomain,$uname)=@_;
5791: my $items='';
5792: foreach my $item (@$storearr) {
5793: $items.=&escape($item).'&';
5794: }
5795: $items=~s/\&$//;
5796: if (!$udomain) { $udomain=$env{'user.domain'}; }
5797: if (!$uname) { $uname=$env{'user.name'}; }
5798: my $uhome=&homeserver($uname,$udomain);
5799:
5800: my $rep=&reply("get:$udomain:$uname:$namespace:$items",$uhome);
5801: my @pairs=split(/\&/,$rep);
5802: if ( $#pairs==0 && $pairs[0] =~ /^(con_lost|error|no_such_host)/i) {
5803: return @pairs;
5804: }
5805: my %returnhash=();
5806: my $i=0;
5807: foreach my $item (@$storearr) {
5808: $returnhash{$item}=&thaw_unescape($pairs[$i]);
5809: $i++;
5810: }
5811: return %returnhash;
5812: }
5813:
5814: # --------------------------------------------------------------- del interface
5815:
5816: sub del {
5817: my ($namespace,$storearr,$udomain,$uname)=@_;
5818: my $items='';
5819: foreach my $item (@$storearr) {
5820: $items.=&escape($item).'&';
5821: }
5822:
5823: $items=~s/\&$//;
5824: if (!$udomain) { $udomain=$env{'user.domain'}; }
5825: if (!$uname) { $uname=$env{'user.name'}; }
5826: my $uhome=&homeserver($uname,$udomain);
5827: return &reply("del:$udomain:$uname:$namespace:$items",$uhome);
5828: }
5829:
5830: # -------------------------------------------------------------- dump interface
5831:
5832: sub unserialize {
5833: my ($rep, $escapedkeys) = @_;
5834:
5835: return {} if $rep =~ /^error/;
5836:
5837: my %returnhash=();
5838: foreach my $item (split(/\&/,$rep)) {
5839: my ($key, $value) = split(/=/, $item, 2);
5840: $key = unescape($key) unless $escapedkeys;
5841: next if $key =~ /^error: 2 /;
5842: $returnhash{$key} = &thaw_unescape($value);
5843: }
5844: #return %returnhash;
5845: return \%returnhash;
5846: }
5847:
5848: # see Lond::dump_with_regexp
5849: # if $escapedkeys hash keys won't get unescaped.
5850: sub dump {
5851: my ($namespace,$udomain,$uname,$regexp,$range,$escapedkeys)=@_;
5852: if (!$udomain) { $udomain=$env{'user.domain'}; }
5853: if (!$uname) { $uname=$env{'user.name'}; }
5854: my $uhome=&homeserver($uname,$udomain);
5855:
5856: if ($regexp) {
5857: $regexp=&escape($regexp);
5858: } else {
5859: $regexp='.';
5860: }
5861: if (grep { $_ eq $uhome } current_machine_ids()) {
5862: # user is hosted on this machine
5863: my $reply = LONCAPA::Lond::dump_with_regexp(join(":", ($udomain,
5864: $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
5865: return %{unserialize($reply, $escapedkeys)};
5866: }
5867: my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
5868: my @pairs=split(/\&/,$rep);
5869: my %returnhash=();
5870: if (!($rep =~ /^error/ )) {
5871: foreach my $item (@pairs) {
5872: my ($key,$value)=split(/=/,$item,2);
5873: $key = unescape($key) unless $escapedkeys;
5874: #$key = &unescape($key);
5875: next if ($key =~ /^error: 2 /);
5876: $returnhash{$key}=&thaw_unescape($value);
5877: }
5878: }
5879: return %returnhash;
5880: }
5881:
5882:
5883: # --------------------------------------------------------- dumpstore interface
5884:
5885: sub dumpstore {
5886: my ($namespace,$udomain,$uname,$regexp,$range)=@_;
5887: # same as dump but keys must be escaped. They may contain colon separated
5888: # lists of values that may themself contain colons (e.g. symbs).
5889: return &dump($namespace, $udomain, $uname, $regexp, $range, 1);
5890: }
5891:
5892: # -------------------------------------------------------------- keys interface
5893:
5894: sub getkeys {
5895: my ($namespace,$udomain,$uname)=@_;
5896: if (!$udomain) { $udomain=$env{'user.domain'}; }
5897: if (!$uname) { $uname=$env{'user.name'}; }
5898: my $uhome=&homeserver($uname,$udomain);
5899: my $rep=reply("keys:$udomain:$uname:$namespace",$uhome);
5900: my @keyarray=();
5901: foreach my $key (split(/\&/,$rep)) {
5902: next if ($key =~ /^error: 2 /);
5903: push(@keyarray,&unescape($key));
5904: }
5905: return @keyarray;
5906: }
5907:
5908: # --------------------------------------------------------------- currentdump
5909: sub currentdump {
5910: my ($courseid,$sdom,$sname)=@_;
5911: $courseid = $env{'request.course.id'} if (! defined($courseid));
5912: $sdom = $env{'user.domain'} if (! defined($sdom));
5913: $sname = $env{'user.name'} if (! defined($sname));
5914: my $uhome = &homeserver($sname,$sdom);
5915: my $rep;
5916:
5917: if (grep { $_ eq $uhome } current_machine_ids()) {
5918: $rep = LONCAPA::Lond::dump_profile_database(join(":", ($sdom, $sname,
5919: $courseid)));
5920: } else {
5921: $rep = reply('currentdump:'.$sdom.':'.$sname.':'.$courseid,$uhome);
5922: }
5923:
5924: return if ($rep =~ /^(error:|no_such_host)/);
5925: #
5926: my %returnhash=();
5927: #
5928: if ($rep eq "unknown_cmd") {
5929: # an old lond will not know currentdump
5930: # Do a dump and make it look like a currentdump
5931: my @tmp = &dumpstore($courseid,$sdom,$sname,'.');
5932: return if ($tmp[0] =~ /^(error:|no_such_host)/);
5933: my %hash = @tmp;
5934: @tmp=();
5935: %returnhash = %{&convert_dump_to_currentdump(\%hash)};
5936: } else {
5937: my @pairs=split(/\&/,$rep);
5938: foreach my $pair (@pairs) {
5939: my ($key,$value)=split(/=/,$pair,2);
5940: my ($symb,$param) = split(/:/,$key);
5941: $returnhash{&unescape($symb)}->{&unescape($param)} =
5942: &thaw_unescape($value);
5943: }
5944: }
5945: return %returnhash;
5946: }
5947:
5948: sub convert_dump_to_currentdump{
5949: my %hash = %{shift()};
5950: my %returnhash;
5951: # Code ripped from lond, essentially. The only difference
5952: # here is the unescaping done by lonnet::dump(). Conceivably
5953: # we might run in to problems with parameter names =~ /^v\./
5954: while (my ($key,$value) = each(%hash)) {
5955: my ($v,$symb,$param) = split(/:/,$key);
5956: $symb = &unescape($symb);
5957: $param = &unescape($param);
5958: next if ($v eq 'version' || $symb eq 'keys');
5959: next if (exists($returnhash{$symb}) &&
5960: exists($returnhash{$symb}->{$param}) &&
5961: $returnhash{$symb}->{'v.'.$param} > $v);
5962: $returnhash{$symb}->{$param}=$value;
5963: $returnhash{$symb}->{'v.'.$param}=$v;
5964: }
5965: #
5966: # Remove all of the keys in the hashes which keep track of
5967: # the version of the parameter.
5968: while (my ($symb,$param_hash) = each(%returnhash)) {
5969: # use a foreach because we are going to delete from the hash.
5970: foreach my $key (keys(%$param_hash)) {
5971: delete($param_hash->{$key}) if ($key =~ /^v\./);
5972: }
5973: }
5974: return \%returnhash;
5975: }
5976:
5977: # ------------------------------------------------------ critical inc interface
5978:
5979: sub cinc {
5980: return &inc(@_,'critical');
5981: }
5982:
5983: # --------------------------------------------------------------- inc interface
5984:
5985: sub inc {
5986: my ($namespace,$store,$udomain,$uname,$critical) = @_;
5987: if (!$udomain) { $udomain=$env{'user.domain'}; }
5988: if (!$uname) { $uname=$env{'user.name'}; }
5989: my $uhome=&homeserver($uname,$udomain);
5990: my $items='';
5991: if (! ref($store)) {
5992: # got a single value, so use that instead
5993: $items = &escape($store).'=&';
5994: } elsif (ref($store) eq 'SCALAR') {
5995: $items = &escape($$store).'=&';
5996: } elsif (ref($store) eq 'ARRAY') {
5997: $items = join('=&',map {&escape($_);} @{$store});
5998: } elsif (ref($store) eq 'HASH') {
5999: while (my($key,$value) = each(%{$store})) {
6000: $items.= &escape($key).'='.&escape($value).'&';
6001: }
6002: }
6003: $items=~s/\&$//;
6004: if ($critical) {
6005: return &critical("inc:$udomain:$uname:$namespace:$items",$uhome);
6006: } else {
6007: return &reply("inc:$udomain:$uname:$namespace:$items",$uhome);
6008: }
6009: }
6010:
6011: # --------------------------------------------------------------- put interface
6012:
6013: sub put {
6014: my ($namespace,$storehash,$udomain,$uname)=@_;
6015: if (!$udomain) { $udomain=$env{'user.domain'}; }
6016: if (!$uname) { $uname=$env{'user.name'}; }
6017: my $uhome=&homeserver($uname,$udomain);
6018: my $items='';
6019: foreach my $item (keys(%$storehash)) {
6020: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6021: }
6022: $items=~s/\&$//;
6023: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
6024: }
6025:
6026: # ------------------------------------------------------------ newput interface
6027:
6028: sub newput {
6029: my ($namespace,$storehash,$udomain,$uname)=@_;
6030: if (!$udomain) { $udomain=$env{'user.domain'}; }
6031: if (!$uname) { $uname=$env{'user.name'}; }
6032: my $uhome=&homeserver($uname,$udomain);
6033: my $items='';
6034: foreach my $key (keys(%$storehash)) {
6035: $items.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
6036: }
6037: $items=~s/\&$//;
6038: return &reply("newput:$udomain:$uname:$namespace:$items",$uhome);
6039: }
6040:
6041: # --------------------------------------------------------- putstore interface
6042:
6043: sub putstore {
6044: my ($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog)=@_;
6045: if (!$udomain) { $udomain=$env{'user.domain'}; }
6046: if (!$uname) { $uname=$env{'user.name'}; }
6047: my $uhome=&homeserver($uname,$udomain);
6048: my $items='';
6049: foreach my $key (keys(%$storehash)) {
6050: $items.= &escape($key).'='.&freeze_escape($storehash->{$key}).'&';
6051: }
6052: $items=~s/\&$//;
6053: my $esc_symb=&escape($symb);
6054: my $esc_v=&escape($version);
6055: my $reply =
6056: &reply("putstore:$udomain:$uname:$namespace:$esc_symb:$esc_v:$items",
6057: $uhome);
6058: if (($tolog) && ($reply eq 'ok')) {
6059: my $namevalue='';
6060: foreach my $key (keys(%{$storehash})) {
6061: $namevalue.=&escape($key).'='.&freeze_escape($storehash->{$key}).'&';
6062: }
6063: $namevalue .= 'ip='.&escape($ENV{'REMOTE_ADDR'}).
6064: '&host='.&escape($perlvar{'lonHostID'}).
6065: '&version='.$esc_v.
6066: '&by='.&escape($env{'user.name'}.':'.$env{'user.domain'});
6067: &Apache::lonnet::courselog($symb.':'.$uname.':'.$udomain.':PUTSTORE:'.$namevalue);
6068: }
6069: if ($reply eq 'unknown_cmd') {
6070: # gfall back to way things use to be done
6071: return &old_putstore($namespace,$symb,$version,$storehash,$udomain,
6072: $uname);
6073: }
6074: return $reply;
6075: }
6076:
6077: sub old_putstore {
6078: my ($namespace,$symb,$version,$storehash,$udomain,$uname)=@_;
6079: if (!$udomain) { $udomain=$env{'user.domain'}; }
6080: if (!$uname) { $uname=$env{'user.name'}; }
6081: my $uhome=&homeserver($uname,$udomain);
6082: my %newstorehash;
6083: foreach my $item (keys(%$storehash)) {
6084: my $key = $version.':'.&escape($symb).':'.$item;
6085: $newstorehash{$key} = $storehash->{$item};
6086: }
6087: my $items='';
6088: my %allitems = ();
6089: foreach my $item (keys(%newstorehash)) {
6090: if ($item =~ m/^([^\:]+):([^\:]+):([^\:]+)$/) {
6091: my $key = $1.':keys:'.$2;
6092: $allitems{$key} .= $3.':';
6093: }
6094: $items.=$item.'='.&freeze_escape($newstorehash{$item}).'&';
6095: }
6096: foreach my $item (keys(%allitems)) {
6097: $allitems{$item} =~ s/\:$//;
6098: $items.= $item.'='.$allitems{$item}.'&';
6099: }
6100: $items=~s/\&$//;
6101: return &reply("put:$udomain:$uname:$namespace:$items",$uhome);
6102: }
6103:
6104: # ------------------------------------------------------ critical put interface
6105:
6106: sub cput {
6107: my ($namespace,$storehash,$udomain,$uname)=@_;
6108: if (!$udomain) { $udomain=$env{'user.domain'}; }
6109: if (!$uname) { $uname=$env{'user.name'}; }
6110: my $uhome=&homeserver($uname,$udomain);
6111: my $items='';
6112: foreach my $item (keys(%$storehash)) {
6113: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6114: }
6115: $items=~s/\&$//;
6116: return &critical("put:$udomain:$uname:$namespace:$items",$uhome);
6117: }
6118:
6119: # -------------------------------------------------------------- eget interface
6120:
6121: sub eget {
6122: my ($namespace,$storearr,$udomain,$uname)=@_;
6123: my $items='';
6124: foreach my $item (@$storearr) {
6125: $items.=&escape($item).'&';
6126: }
6127: $items=~s/\&$//;
6128: if (!$udomain) { $udomain=$env{'user.domain'}; }
6129: if (!$uname) { $uname=$env{'user.name'}; }
6130: my $uhome=&homeserver($uname,$udomain);
6131: my $rep=&reply("eget:$udomain:$uname:$namespace:$items",$uhome);
6132: my @pairs=split(/\&/,$rep);
6133: my %returnhash=();
6134: my $i=0;
6135: foreach my $item (@$storearr) {
6136: $returnhash{$item}=&thaw_unescape($pairs[$i]);
6137: $i++;
6138: }
6139: return %returnhash;
6140: }
6141:
6142: # ------------------------------------------------------------ tmpput interface
6143: sub tmpput {
6144: my ($storehash,$server,$context)=@_;
6145: my $items='';
6146: foreach my $item (keys(%$storehash)) {
6147: $items.=&escape($item).'='.&freeze_escape($$storehash{$item}).'&';
6148: }
6149: $items=~s/\&$//;
6150: if (defined($context)) {
6151: $items .= ':'.&escape($context);
6152: }
6153: return &reply("tmpput:$items",$server);
6154: }
6155:
6156: # ------------------------------------------------------------ tmpget interface
6157: sub tmpget {
6158: my ($token,$server)=@_;
6159: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6160: my $rep=&reply("tmpget:$token",$server);
6161: my %returnhash;
6162: foreach my $item (split(/\&/,$rep)) {
6163: my ($key,$value)=split(/=/,$item);
6164: next if ($key =~ /^error: 2 /);
6165: $returnhash{&unescape($key)}=&thaw_unescape($value);
6166: }
6167: return %returnhash;
6168: }
6169:
6170: # ------------------------------------------------------------ tmpdel interface
6171: sub tmpdel {
6172: my ($token,$server)=@_;
6173: if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
6174: return &reply("tmpdel:$token",$server);
6175: }
6176:
6177: # ------------------------------------------------------------ get_timebased_id
6178:
6179: sub get_timebased_id {
6180: my ($prefix,$keyid,$namespace,$cdom,$cnum,$idtype,$who,$locktries,
6181: $maxtries) = @_;
6182: my ($newid,$error,$dellock);
6183: unless (($prefix =~ /^\w+$/) && ($keyid =~ /^\w+$/) && ($namespace ne '')) {
6184: return ('','ok','invalid call to get suffix');
6185: }
6186:
6187: # set defaults for any optional args for which values were not supplied
6188: if ($who eq '') {
6189: $who = $env{'user.name'}.':'.$env{'user.domain'};
6190: }
6191: if (!$locktries) {
6192: $locktries = 3;
6193: }
6194: if (!$maxtries) {
6195: $maxtries = 10;
6196: }
6197:
6198: if (($cdom eq '') || ($cnum eq '')) {
6199: if ($env{'request.course.id'}) {
6200: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6201: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6202: }
6203: if (($cdom eq '') || ($cnum eq '')) {
6204: return ('','ok','call to get suffix not in course context');
6205: }
6206: }
6207:
6208: # construct locking item
6209: my $lockhash = {
6210: $prefix."\0".'locked_'.$keyid => $who,
6211: };
6212: my $tries = 0;
6213:
6214: # attempt to get lock on nohist_$namespace file
6215: my $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6216: while (($gotlock ne 'ok') && $tries <$locktries) {
6217: $tries ++;
6218: sleep 1;
6219: $gotlock = &Apache::lonnet::newput('nohist_'.$namespace,$lockhash,$cdom,$cnum);
6220: }
6221:
6222: # attempt to get unique identifier, based on current timestamp
6223: if ($gotlock eq 'ok') {
6224: my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
6225: my $id = time;
6226: $newid = $id;
6227: if ($idtype eq 'addcode') {
6228: $newid .= &sixnum_code();
6229: }
6230: my $idtries = 0;
6231: while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
6232: if ($idtype eq 'concat') {
6233: $newid = $id.$idtries;
6234: } elsif ($idtype eq 'addcode') {
6235: $newid = $newid.&sixnum_code();
6236: } else {
6237: $newid ++;
6238: }
6239: $idtries ++;
6240: }
6241: if (!exists($inuse{$prefix."\0".$newid})) {
6242: my %new_item = (
6243: $prefix."\0".$newid => $who,
6244: );
6245: my $putresult = &Apache::lonnet::put('nohist_'.$namespace,\%new_item,
6246: $cdom,$cnum);
6247: if ($putresult ne 'ok') {
6248: undef($newid);
6249: $error = 'error saving new item: '.$putresult;
6250: }
6251: } else {
6252: undef($newid);
6253: $error = ('error: no unique suffix available for the new item ');
6254: }
6255: # remove lock
6256: my @del_lock = ($prefix."\0".'locked_'.$keyid);
6257: $dellock = &Apache::lonnet::del('nohist_'.$namespace,\@del_lock,$cdom,$cnum);
6258: } else {
6259: $error = "error: could not obtain lockfile\n";
6260: $dellock = 'ok';
6261: if (($prefix eq 'paste') && ($namespace eq 'courseeditor') && ($keyid eq 'num')) {
6262: $dellock = 'nolock';
6263: }
6264: }
6265: return ($newid,$dellock,$error);
6266: }
6267:
6268: sub sixnum_code {
6269: my $code;
6270: for (0..6) {
6271: $code .= int( rand(9) );
6272: }
6273: return $code;
6274: }
6275:
6276: # -------------------------------------------------- portfolio access checking
6277:
6278: sub portfolio_access {
6279: my ($requrl,$clientip) = @_;
6280: my (undef,$udom,$unum,$file_name,$group) = &parse_portfolio_url($requrl);
6281: my $result = &get_portfolio_access($udom,$unum,$file_name,$group,$clientip);
6282: if ($result) {
6283: my %setters;
6284: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
6285: my ($startblock,$endblock) =
6286: &Apache::loncommon::blockcheck(\%setters,'port',$unum,$udom);
6287: if ($startblock && $endblock) {
6288: return 'B';
6289: }
6290: } else {
6291: my ($startblock,$endblock) =
6292: &Apache::loncommon::blockcheck(\%setters,'port');
6293: if ($startblock && $endblock) {
6294: return 'B';
6295: }
6296: }
6297: }
6298: if ($result eq 'ok') {
6299: return 'F';
6300: } elsif ($result =~ /^[^:]+:guest_/) {
6301: return 'A';
6302: }
6303: return '';
6304: }
6305:
6306: sub get_portfolio_access {
6307: my ($udom,$unum,$file_name,$group,$clientip,$access_hash) = @_;
6308:
6309: if (!ref($access_hash)) {
6310: my $current_perms = &get_portfile_permissions($udom,$unum);
6311: my %access_controls = &get_access_controls($current_perms,$group,
6312: $file_name);
6313: $access_hash = $access_controls{$file_name};
6314: }
6315:
6316: my ($public,$guest,@domains,@users,@courses,@groups,@ips);
6317: my $now = time;
6318: if (ref($access_hash) eq 'HASH') {
6319: foreach my $key (keys(%{$access_hash})) {
6320: my ($num,$scope,$end,$start) = ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
6321: if ($start > $now) {
6322: next;
6323: }
6324: if ($end && $end<$now) {
6325: next;
6326: }
6327: if ($scope eq 'public') {
6328: $public = $key;
6329: last;
6330: } elsif ($scope eq 'guest') {
6331: $guest = $key;
6332: } elsif ($scope eq 'domains') {
6333: push(@domains,$key);
6334: } elsif ($scope eq 'users') {
6335: push(@users,$key);
6336: } elsif ($scope eq 'course') {
6337: push(@courses,$key);
6338: } elsif ($scope eq 'group') {
6339: push(@groups,$key);
6340: } elsif ($scope eq 'ip') {
6341: push(@ips,$key);
6342: }
6343: }
6344: if ($public) {
6345: return 'ok';
6346: } elsif (@ips > 0) {
6347: my $allowed;
6348: foreach my $ipkey (@ips) {
6349: if (ref($access_hash->{$ipkey}{'ip'}) eq 'ARRAY') {
6350: if (&Apache::loncommon::check_ip_acc(join(',',@{$access_hash->{$ipkey}{'ip'}}),$clientip)) {
6351: $allowed = 1;
6352: last;
6353: }
6354: }
6355: }
6356: if ($allowed) {
6357: return 'ok';
6358: }
6359: }
6360: if ($env{'user.name'} eq 'public' && $env{'user.domain'} eq 'public') {
6361: if ($guest) {
6362: return $guest;
6363: }
6364: } else {
6365: if (@domains > 0) {
6366: foreach my $domkey (@domains) {
6367: if (ref($access_hash->{$domkey}{'dom'}) eq 'ARRAY') {
6368: if (grep(/^\Q$env{'user.domain'}\E$/,@{$access_hash->{$domkey}{'dom'}})) {
6369: return 'ok';
6370: }
6371: }
6372: }
6373: }
6374: if (@users > 0) {
6375: foreach my $userkey (@users) {
6376: if (ref($access_hash->{$userkey}{'users'}) eq 'ARRAY') {
6377: foreach my $item (@{$access_hash->{$userkey}{'users'}}) {
6378: if (ref($item) eq 'HASH') {
6379: if (($item->{'uname'} eq $env{'user.name'}) &&
6380: ($item->{'udom'} eq $env{'user.domain'})) {
6381: return 'ok';
6382: }
6383: }
6384: }
6385: }
6386: }
6387: }
6388: my %roleshash;
6389: my @courses_and_groups = @courses;
6390: push(@courses_and_groups,@groups);
6391: if (@courses_and_groups > 0) {
6392: my (%allgroups,%allroles);
6393: my ($start,$end,$role,$sec,$group);
6394: foreach my $envkey (%env) {
6395: if ($envkey =~ m-^user\.role\.(gr|cc|co|in|ta|ep|ad|st)\./($match_domain)/($match_courseid)/?([^/]*)$-) {
6396: my $cid = $2.'_'.$3;
6397: if ($1 eq 'gr') {
6398: $group = $4;
6399: $allgroups{$cid}{$group} = $env{$envkey};
6400: } else {
6401: if ($4 eq '') {
6402: $sec = 'none';
6403: } else {
6404: $sec = $4;
6405: }
6406: $allroles{$cid}{$1}{$sec} = $env{$envkey};
6407: }
6408: } elsif ($envkey =~ m-^user\.role\./cr/($match_domain/$match_username/\w*)./($match_domain)/($match_courseid)/?([^/]*)$-) {
6409: my $cid = $2.'_'.$3;
6410: if ($4 eq '') {
6411: $sec = 'none';
6412: } else {
6413: $sec = $4;
6414: }
6415: $allroles{$cid}{$1}{$sec} = $env{$envkey};
6416: }
6417: }
6418: if (keys(%allroles) == 0) {
6419: return;
6420: }
6421: foreach my $key (@courses_and_groups) {
6422: my %content = %{$$access_hash{$key}};
6423: my $cnum = $content{'number'};
6424: my $cdom = $content{'domain'};
6425: my $cid = $cdom.'_'.$cnum;
6426: if (!exists($allroles{$cid})) {
6427: next;
6428: }
6429: foreach my $role_id (keys(%{$content{'roles'}})) {
6430: my @sections = @{$content{'roles'}{$role_id}{'section'}};
6431: my @groups = @{$content{'roles'}{$role_id}{'group'}};
6432: my @status = @{$content{'roles'}{$role_id}{'access'}};
6433: my @roles = @{$content{'roles'}{$role_id}{'role'}};
6434: foreach my $role (keys(%{$allroles{$cid}})) {
6435: if ((grep/^all$/,@roles) || (grep/^\Q$role\E$/,@roles)) {
6436: foreach my $sec (keys(%{$allroles{$cid}{$role}})) {
6437: if (&course_group_datechecker($allroles{$cid}{$role}{$sec},$now,\@status) eq 'ok') {
6438: if (grep/^all$/,@sections) {
6439: return 'ok';
6440: } else {
6441: if (grep/^$sec$/,@sections) {
6442: return 'ok';
6443: }
6444: }
6445: }
6446: }
6447: if (keys(%{$allgroups{$cid}}) == 0) {
6448: if (grep/^none$/,@groups) {
6449: return 'ok';
6450: }
6451: } else {
6452: if (grep/^all$/,@groups) {
6453: return 'ok';
6454: }
6455: foreach my $group (keys(%{$allgroups{$cid}})) {
6456: if (grep/^$group$/,@groups) {
6457: return 'ok';
6458: }
6459: }
6460: }
6461: }
6462: }
6463: }
6464: }
6465: }
6466: if ($guest) {
6467: return $guest;
6468: }
6469: }
6470: }
6471: return;
6472: }
6473:
6474: sub course_group_datechecker {
6475: my ($dates,$now,$status) = @_;
6476: my ($start,$end) = split(/\./,$dates);
6477: if (!$start && !$end) {
6478: return 'ok';
6479: }
6480: if (grep/^active$/,@{$status}) {
6481: if (((!$start) || ($start && $start <= $now)) && ((!$end) || ($end && $end >= $now))) {
6482: return 'ok';
6483: }
6484: }
6485: if (grep/^previous$/,@{$status}) {
6486: if ($end > $now ) {
6487: return 'ok';
6488: }
6489: }
6490: if (grep/^future$/,@{$status}) {
6491: if ($start > $now) {
6492: return 'ok';
6493: }
6494: }
6495: return;
6496: }
6497:
6498: sub parse_portfolio_url {
6499: my ($url) = @_;
6500:
6501: my ($type,$udom,$unum,$group,$file_name);
6502:
6503: if ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_username)/portfolio(/.+)$-) {
6504: $type = 1;
6505: $udom = $1;
6506: $unum = $2;
6507: $file_name = $3;
6508: } elsif ($url =~ m-^/*(?:uploaded|editupload)/($match_domain)/($match_courseid)/groups/([^/]+)/portfolio/(.+)$-) {
6509: $type = 2;
6510: $udom = $1;
6511: $unum = $2;
6512: $group = $3;
6513: $file_name = $3.'/'.$4;
6514: }
6515: if (wantarray) {
6516: return ($type,$udom,$unum,$file_name,$group);
6517: }
6518: return $type;
6519: }
6520:
6521: sub is_portfolio_url {
6522: my ($url) = @_;
6523: return scalar(&parse_portfolio_url($url));
6524: }
6525:
6526: sub is_portfolio_file {
6527: my ($file) = @_;
6528: if (($file =~ /^portfolio/) || ($file =~ /^groups\/\w+\/portfolio/)) {
6529: return 1;
6530: }
6531: return;
6532: }
6533:
6534: sub usertools_access {
6535: my ($uname,$udom,$tool,$action,$context,$userenvref,$domdefref,$is_advref)=@_;
6536: my ($access,%tools);
6537: if ($context eq '') {
6538: $context = 'tools';
6539: }
6540: if ($context eq 'requestcourses') {
6541: %tools = (
6542: official => 1,
6543: unofficial => 1,
6544: community => 1,
6545: textbook => 1,
6546: placement => 1,
6547: );
6548: } elsif ($context eq 'requestauthor') {
6549: %tools = (
6550: requestauthor => 1,
6551: );
6552: } else {
6553: %tools = (
6554: aboutme => 1,
6555: blog => 1,
6556: webdav => 1,
6557: portfolio => 1,
6558: );
6559: }
6560: return if (!defined($tools{$tool}));
6561:
6562: if (($udom eq '') || ($uname eq '')) {
6563: $udom = $env{'user.domain'};
6564: $uname = $env{'user.name'};
6565: }
6566:
6567: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6568: if ($action ne 'reload') {
6569: if ($context eq 'requestcourses') {
6570: return $env{'environment.canrequest.'.$tool};
6571: } elsif ($context eq 'requestauthor') {
6572: return $env{'environment.canrequest.author'};
6573: } else {
6574: return $env{'environment.availabletools.'.$tool};
6575: }
6576: }
6577: }
6578:
6579: my ($toolstatus,$inststatus,$envkey);
6580: if ($context eq 'requestauthor') {
6581: $envkey = $context;
6582: } else {
6583: $envkey = $context.'.'.$tool;
6584: }
6585:
6586: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
6587: ($action ne 'reload')) {
6588: $toolstatus = $env{'environment.'.$envkey};
6589: $inststatus = $env{'environment.inststatus'};
6590: } else {
6591: if (ref($userenvref) eq 'HASH') {
6592: $toolstatus = $userenvref->{$envkey};
6593: $inststatus = $userenvref->{'inststatus'};
6594: } else {
6595: my %userenv = &userenvironment($udom,$uname,$envkey,'inststatus');
6596: $toolstatus = $userenv{$envkey};
6597: $inststatus = $userenv{'inststatus'};
6598: }
6599: }
6600:
6601: if ($toolstatus ne '') {
6602: if ($toolstatus) {
6603: $access = 1;
6604: } else {
6605: $access = 0;
6606: }
6607: return $access;
6608: }
6609:
6610: my ($is_adv,%domdef);
6611: if (ref($is_advref) eq 'HASH') {
6612: $is_adv = $is_advref->{'is_adv'};
6613: } else {
6614: $is_adv = &is_advanced_user($udom,$uname);
6615: }
6616: if (ref($domdefref) eq 'HASH') {
6617: %domdef = %{$domdefref};
6618: } else {
6619: %domdef = &get_domain_defaults($udom);
6620: }
6621: if (ref($domdef{$tool}) eq 'HASH') {
6622: if ($is_adv) {
6623: if ($domdef{$tool}{'_LC_adv'} ne '') {
6624: if ($domdef{$tool}{'_LC_adv'}) {
6625: $access = 1;
6626: } else {
6627: $access = 0;
6628: }
6629: return $access;
6630: }
6631: }
6632: if ($inststatus ne '') {
6633: my ($hasaccess,$hasnoaccess);
6634: foreach my $affiliation (split(/:/,$inststatus)) {
6635: if ($domdef{$tool}{$affiliation} ne '') {
6636: if ($domdef{$tool}{$affiliation}) {
6637: $hasaccess = 1;
6638: } else {
6639: $hasnoaccess = 1;
6640: }
6641: }
6642: }
6643: if ($hasaccess || $hasnoaccess) {
6644: if ($hasaccess) {
6645: $access = 1;
6646: } elsif ($hasnoaccess) {
6647: $access = 0;
6648: }
6649: return $access;
6650: }
6651: } else {
6652: if ($domdef{$tool}{'default'} ne '') {
6653: if ($domdef{$tool}{'default'}) {
6654: $access = 1;
6655: } elsif ($domdef{$tool}{'default'} == 0) {
6656: $access = 0;
6657: }
6658: return $access;
6659: }
6660: }
6661: } else {
6662: if (($context eq 'tools') && ($tool ne 'webdav')) {
6663: $access = 1;
6664: } else {
6665: $access = 0;
6666: }
6667: return $access;
6668: }
6669: }
6670:
6671: sub is_course_owner {
6672: my ($cdom,$cnum,$udom,$uname) = @_;
6673: if (($udom eq '') || ($uname eq '')) {
6674: $udom = $env{'user.domain'};
6675: $uname = $env{'user.name'};
6676: }
6677: unless (($udom eq '') || ($uname eq '')) {
6678: if (exists($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'})) {
6679: if ($env{'course.'.$cdom.'_'.$cnum.'.internal.courseowner'} eq $uname.':'.$udom) {
6680: return 1;
6681: } else {
6682: my %courseinfo = &Apache::lonnet::coursedescription($cdom.'/'.$cnum);
6683: if ($courseinfo{'internal.courseowner'} eq $uname.':'.$udom) {
6684: return 1;
6685: }
6686: }
6687: }
6688: }
6689: return;
6690: }
6691:
6692: sub is_advanced_user {
6693: my ($udom,$uname) = @_;
6694: if ($udom ne '' && $uname ne '') {
6695: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
6696: if (wantarray) {
6697: return ($env{'user.adv'},$env{'user.author'});
6698: } else {
6699: return $env{'user.adv'};
6700: }
6701: }
6702: }
6703: my %roleshash = &get_my_roles($uname,$udom,'userroles',undef,undef,undef,1);
6704: my %allroles;
6705: my ($is_adv,$is_author);
6706: foreach my $role (keys(%roleshash)) {
6707: my ($trest,$tdomain,$trole,$sec) = split(/:/,$role);
6708: my $area = '/'.$tdomain.'/'.$trest;
6709: if ($sec ne '') {
6710: $area .= '/'.$sec;
6711: }
6712: if (($area ne '') && ($trole ne '')) {
6713: my $spec=$trole.'.'.$area;
6714: if ($trole =~ /^cr\//) {
6715: &custom_roleprivs(\%allroles,$trole,$tdomain,$trest,$spec,$area);
6716: } elsif ($trole ne 'gr') {
6717: &standard_roleprivs(\%allroles,$trole,$tdomain,$spec,$trest,$area);
6718: }
6719: if ($trole eq 'au') {
6720: $is_author = 1;
6721: }
6722: }
6723: }
6724: foreach my $role (keys(%allroles)) {
6725: last if ($is_adv);
6726: foreach my $item (split(/:/,$allroles{$role})) {
6727: if ($item ne '') {
6728: my ($privilege,$restrictions)=split(/&/,$item);
6729: if ($privilege eq 'adv') {
6730: $is_adv = 1;
6731: last;
6732: }
6733: }
6734: }
6735: }
6736: if (wantarray) {
6737: return ($is_adv,$is_author);
6738: }
6739: return $is_adv;
6740: }
6741:
6742: sub check_can_request {
6743: my ($dom,$can_request,$request_domains) = @_;
6744: my $canreq = 0;
6745: my ($types,$typename) = &Apache::loncommon::course_types();
6746: my @options = ('approval','validate','autolimit');
6747: my $optregex = join('|',@options);
6748: if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
6749: foreach my $type (@{$types}) {
6750: if (&usertools_access($env{'user.name'},
6751: $env{'user.domain'},
6752: $type,undef,'requestcourses')) {
6753: $canreq ++;
6754: if (ref($request_domains) eq 'HASH') {
6755: push(@{$request_domains->{$type}},$env{'user.domain'});
6756: }
6757: if ($dom eq $env{'user.domain'}) {
6758: $can_request->{$type} = 1;
6759: }
6760: }
6761: if ($env{'environment.reqcrsotherdom.'.$type} ne '') {
6762: my @curr = split(',',$env{'environment.reqcrsotherdom.'.$type});
6763: if (@curr > 0) {
6764: foreach my $item (@curr) {
6765: if (ref($request_domains) eq 'HASH') {
6766: my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
6767: if ($otherdom ne '') {
6768: if (ref($request_domains->{$type}) eq 'ARRAY') {
6769: unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
6770: push(@{$request_domains->{$type}},$otherdom);
6771: }
6772: } else {
6773: push(@{$request_domains->{$type}},$otherdom);
6774: }
6775: }
6776: }
6777: }
6778: unless($dom eq $env{'user.domain'}) {
6779: $canreq ++;
6780: if (grep(/^\Q$dom\E:($optregex)(=?\d*)$/,@curr)) {
6781: $can_request->{$type} = 1;
6782: }
6783: }
6784: }
6785: }
6786: }
6787: }
6788: return $canreq;
6789: }
6790:
6791: # ---------------------------------------------- Custom access rule evaluation
6792:
6793: sub customaccess {
6794: my ($priv,$uri)=@_;
6795: my ($urole,$urealm)=split(/\./,$env{'request.role'},2);
6796: my (undef,$udom,$ucrs,$usec)=split(/\//,$urealm);
6797: $udom = &LONCAPA::clean_domain($udom);
6798: $ucrs = &LONCAPA::clean_username($ucrs);
6799: my $access=0;
6800: foreach my $right (split(/\s*\,\s*/,&metadata($uri,'rule_rights'))) {
6801: my ($effect,$realm,$role,$type)=split(/\:/,$right);
6802: if ($type eq 'user') {
6803: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6804: my ($tdom,$tuname)=split(m{/},$scope);
6805: if ($tdom) {
6806: if ($tdom ne $env{'user.domain'}) { next; }
6807: }
6808: if ($tuname) {
6809: if ($tuname ne $env{'user.name'}) { next; }
6810: }
6811: $access=($effect eq 'allow');
6812: last;
6813: }
6814: } else {
6815: if ($role) {
6816: if ($role ne $urole) { next; }
6817: }
6818: foreach my $scope (split(/\s*\,\s*/,$realm)) {
6819: my ($tdom,$tcrs,$tsec)=split(/\_/,$scope);
6820: if ($tdom) {
6821: if ($tdom ne $udom) { next; }
6822: }
6823: if ($tcrs) {
6824: if ($tcrs ne $ucrs) { next; }
6825: }
6826: if ($tsec) {
6827: if ($tsec ne $usec) { next; }
6828: }
6829: $access=($effect eq 'allow');
6830: last;
6831: }
6832: if ($realm eq '' && $role eq '') {
6833: $access=($effect eq 'allow');
6834: }
6835: }
6836: }
6837: return $access;
6838: }
6839:
6840: # ------------------------------------------------- Check for a user privilege
6841:
6842: sub allowed {
6843: my ($priv,$uri,$symb,$role,$clientip,$noblockcheck)=@_;
6844: my $ver_orguri=$uri;
6845: $uri=&deversion($uri);
6846: my $orguri=$uri;
6847: $uri=&declutter($uri);
6848:
6849: if ($priv eq 'evb') {
6850: # Evade communication block restrictions for specified role in a course
6851: if ($env{'user.priv.'.$role} =~/evb\&([^\:]*)/) {
6852: return $1;
6853: } else {
6854: return;
6855: }
6856: }
6857:
6858: if (defined($env{'allowed.'.$priv})) { return $env{'allowed.'.$priv}; }
6859: # Free bre access to adm and meta resources
6860: if (((($uri=~/^adm\//) && ($uri !~ m{/(?:smppg|bulletinboard)$}))
6861: || (($uri=~/\.meta$/) && ($uri!~m|^uploaded/|) ))
6862: && ($priv eq 'bre')) {
6863: return 'F';
6864: }
6865:
6866: # Free bre access to user's own portfolio contents
6867: my ($space,$domain,$name,@dir)=split('/',$uri);
6868: if (($space=~/^(uploaded|editupload)$/) && ($env{'user.name'} eq $name) &&
6869: ($env{'user.domain'} eq $domain) && ('portfolio' eq $dir[0])) {
6870: my %setters;
6871: my ($startblock,$endblock) =
6872: &Apache::loncommon::blockcheck(\%setters,'port');
6873: if ($startblock && $endblock) {
6874: return 'B';
6875: } else {
6876: return 'F';
6877: }
6878: }
6879:
6880: # bre access to group portfolio for rgf priv in group, or mdg or vcg in course.
6881: if (($space=~/^(uploaded|editupload)$/) && ($dir[0] eq 'groups')
6882: && ($dir[2] eq 'portfolio') && ($priv eq 'bre')) {
6883: if (exists($env{'request.course.id'})) {
6884: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
6885: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
6886: if (($domain eq $cdom) && ($name eq $cnum)) {
6887: my $courseprivid=$env{'request.course.id'};
6888: $courseprivid=~s/\_/\//;
6889: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid
6890: .'/'.$dir[1]} =~/rgf\&([^\:]*)/) {
6891: return $1;
6892: } else {
6893: if ($env{'request.course.sec'}) {
6894: $courseprivid.='/'.$env{'request.course.sec'};
6895: }
6896: if ($env{'user.priv.'.$env{'request.role'}.'./'.
6897: $courseprivid} =~/(mdg|vcg)\&([^\:]*)/) {
6898: return $2;
6899: }
6900: }
6901: }
6902: }
6903: }
6904:
6905: # Free bre to public access
6906:
6907: if ($priv eq 'bre') {
6908: my $copyright=&metadata($uri,'copyright');
6909: if (($copyright eq 'public') && (!$env{'request.course.id'})) {
6910: return 'F';
6911: }
6912: if ($copyright eq 'priv') {
6913: $uri=~/([^\/]+)\/([^\/]+)\//;
6914: unless (($env{'user.name'} eq $2) && ($env{'user.domain'} eq $1)) {
6915: return '';
6916: }
6917: }
6918: if ($copyright eq 'domain') {
6919: $uri=~/([^\/]+)\/([^\/]+)\//;
6920: unless (($env{'user.domain'} eq $1) ||
6921: ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1)) {
6922: return '';
6923: }
6924: }
6925: if ($env{'request.role'}=~ /li\.\//) {
6926: # Library role, so allow browsing of resources in this domain.
6927: return 'F';
6928: }
6929: if ($copyright eq 'custom') {
6930: unless (&customaccess($priv,$uri)) { return ''; }
6931: }
6932: }
6933: # Domain coordinator is trying to create a course
6934: if (($priv eq 'ccc') && ($env{'request.role'} =~ /^dc\./)) {
6935: # uri is the requested domain in this case.
6936: # comparison to 'request.role.domain' shows if the user has selected
6937: # a role of dc for the domain in question.
6938: return 'F' if ($uri eq $env{'request.role.domain'});
6939: }
6940:
6941: my $thisallowed='';
6942: my $statecond=0;
6943: my $courseprivid='';
6944:
6945: my $ownaccess;
6946: # Community Coordinator or Assistant Co-author browsing resource space.
6947: if (($priv eq 'bro') && ($env{'user.author'})) {
6948: if ($uri eq '') {
6949: $ownaccess = 1;
6950: } else {
6951: if (($env{'user.domain'} ne '') && ($env{'user.name'} ne '')) {
6952: my $udom = $env{'user.domain'};
6953: my $uname = $env{'user.name'};
6954: if ($uri =~ m{^\Q$udom\E/?$}) {
6955: $ownaccess = 1;
6956: } elsif ($uri =~ m{^\Q$udom\E/\Q$uname\E/?}) {
6957: unless ($uri =~ m{\.\./}) {
6958: $ownaccess = 1;
6959: }
6960: } elsif (($udom ne 'public') && ($uname ne 'public')) {
6961: my $now = time;
6962: if ($uri =~ m{^([^/]+)/?$}) {
6963: my $adom = $1;
6964: foreach my $key (keys(%env)) {
6965: if ($key =~ m{^user\.role\.(ca|aa)/\Q$adom\E}) {
6966: my ($start,$end) = split('.',$env{$key});
6967: if (($now >= $start) && (!$end || $end < $now)) {
6968: $ownaccess = 1;
6969: last;
6970: }
6971: }
6972: }
6973: } elsif ($uri =~ m{^([^/]+)/([^/]+)/?}) {
6974: my $adom = $1;
6975: my $aname = $2;
6976: foreach my $role ('ca','aa') {
6977: if ($env{"user.role.$role./$adom/$aname"}) {
6978: my ($start,$end) =
6979: split('.',$env{"user.role.$role./$adom/$aname"});
6980: if (($now >= $start) && (!$end || $end < $now)) {
6981: $ownaccess = 1;
6982: last;
6983: }
6984: }
6985: }
6986: }
6987: }
6988: }
6989: }
6990: }
6991:
6992: # Course
6993:
6994: if ($env{'user.priv.'.$env{'request.role'}.'./'}=~/\Q$priv\E\&([^\:]*)/) {
6995: unless (($priv eq 'bro') && (!$ownaccess)) {
6996: $thisallowed.=$1;
6997: }
6998: }
6999:
7000: # Domain
7001:
7002: if ($env{'user.priv.'.$env{'request.role'}.'./'.(split(/\//,$uri))[0].'/'}
7003: =~/\Q$priv\E\&([^\:]*)/) {
7004: unless (($priv eq 'bro') && (!$ownaccess)) {
7005: $thisallowed.=$1;
7006: }
7007: }
7008:
7009: # User who is not author or co-author might still be able to edit
7010: # resource of an author in the domain (e.g., if Domain Coordinator).
7011: if (($priv eq 'eco') && ($thisallowed eq '') && ($env{'request.course.id'}) &&
7012: (&allowed('mdc',$env{'request.course.id'}))) {
7013: if ($env{"user.priv.cm./$uri/"}=~/\Q$priv\E\&([^\:]*)/) {
7014: $thisallowed.=$1;
7015: }
7016: }
7017:
7018: # Course: uri itself is a course
7019: my $courseuri=$uri;
7020: $courseuri=~s/\_(\d)/\/$1/;
7021: $courseuri=~s/^([^\/])/\/$1/;
7022:
7023: if ($env{'user.priv.'.$env{'request.role'}.'.'.$courseuri}
7024: =~/\Q$priv\E\&([^\:]*)/) {
7025: unless (($priv eq 'bro') && (!$ownaccess)) {
7026: $thisallowed.=$1;
7027: }
7028: }
7029:
7030: # URI is an uploaded document for this course, default permissions don't matter
7031: # not allowing 'edit' access (editupload) to uploaded course docs
7032: if (($priv eq 'bre') && ($uri=~m|^uploaded/|)) {
7033: $thisallowed='';
7034: my ($match)=&is_on_map($uri);
7035: if ($match) {
7036: if ($env{'user.priv.'.$env{'request.role'}.'./'}
7037: =~/\Q$priv\E\&([^\:]*)/) {
7038: my $value = $1;
7039: if ($noblockcheck) {
7040: $thisallowed.=$value;
7041: } else {
7042: my @blockers = &has_comm_blocking($priv,$symb,$uri);
7043: if (@blockers > 0) {
7044: $thisallowed = 'B';
7045: } else {
7046: $thisallowed.=$value;
7047: }
7048: }
7049: }
7050: } else {
7051: my $refuri = $env{'httpref.'.$orguri} || $env{'httpref.'.$ver_orguri};
7052: if ($refuri) {
7053: if ($refuri =~ m|^/adm/|) {
7054: $thisallowed='F';
7055: } else {
7056: $refuri=&declutter($refuri);
7057: my ($match) = &is_on_map($refuri);
7058: if ($match) {
7059: if ($noblockcheck) {
7060: $thisallowed='F';
7061: } else {
7062: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
7063: if (@blockers > 0) {
7064: $thisallowed = 'B';
7065: } else {
7066: $thisallowed='F';
7067: }
7068: }
7069: }
7070: }
7071: }
7072: }
7073: }
7074:
7075: if ($priv eq 'bre'
7076: && $thisallowed ne 'F'
7077: && $thisallowed ne '2'
7078: && &is_portfolio_url($uri)) {
7079: $thisallowed = &portfolio_access($uri,$clientip);
7080: }
7081:
7082: # Full access at system, domain or course-wide level? Exit.
7083: if ($thisallowed=~/F/) {
7084: return 'F';
7085: }
7086:
7087: # If this is generating or modifying users, exit with special codes
7088:
7089: if (':csu:cdc:ccc:cin:cta:cep:ccr:cst:cad:cli:cau:cdg:cca:caa:'=~/\:\Q$priv\E\:/) {
7090: if (($priv eq 'cca') || ($priv eq 'caa')) {
7091: my ($audom,$auname)=split('/',$uri);
7092: # no author name given, so this just checks on the general right to make a co-author in this domain
7093: unless ($auname) { return $thisallowed; }
7094: # an author name is given, so we are about to actually make a co-author for a certain account
7095: if (($auname ne $env{'user.name'} && $env{'request.role'} !~ /^dc\./) ||
7096: (($audom ne $env{'user.domain'} && $env{'request.role'} !~ /^dc\./) &&
7097: ($audom ne $env{'request.role.domain'}))) { return ''; }
7098: }
7099: return $thisallowed;
7100: }
7101: #
7102: # Gathered so far: system, domain and course wide privileges
7103: #
7104: # Course: See if uri or referer is an individual resource that is part of
7105: # the course
7106:
7107: if ($env{'request.course.id'}) {
7108:
7109: $courseprivid=$env{'request.course.id'};
7110: if ($env{'request.course.sec'}) {
7111: $courseprivid.='/'.$env{'request.course.sec'};
7112: }
7113: $courseprivid=~s/\_/\//;
7114: my $checkreferer=1;
7115: my ($match,$cond)=&is_on_map($uri);
7116: if ($match) {
7117: $statecond=$cond;
7118: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
7119: =~/\Q$priv\E\&([^\:]*)/) {
7120: my $value = $1;
7121: if ($priv eq 'bre') {
7122: if ($noblockcheck) {
7123: $thisallowed.=$value;
7124: } else {
7125: my @blockers = &has_comm_blocking($priv,$symb,$uri);
7126: if (@blockers > 0) {
7127: $thisallowed = 'B';
7128: } else {
7129: $thisallowed.=$value;
7130: }
7131: }
7132: } else {
7133: $thisallowed.=$value;
7134: }
7135: $checkreferer=0;
7136: }
7137: }
7138:
7139: if ($checkreferer) {
7140: my $refuri=$env{'httpref.'.$orguri};
7141: unless ($refuri) {
7142: foreach my $key (keys(%env)) {
7143: if ($key=~/^httpref\..*\*/) {
7144: my $pattern=$key;
7145: $pattern=~s/^httpref\.\/res\///;
7146: $pattern=~s/\*/\[\^\/\]\+/g;
7147: $pattern=~s/\//\\\//g;
7148: if ($orguri=~/$pattern/) {
7149: $refuri=$env{$key};
7150: }
7151: }
7152: }
7153: }
7154:
7155: if ($refuri) {
7156: $refuri=&declutter($refuri);
7157: my ($match,$cond)=&is_on_map($refuri);
7158: if ($match) {
7159: my $refstatecond=$cond;
7160: if ($env{'user.priv.'.$env{'request.role'}.'./'.$courseprivid}
7161: =~/\Q$priv\E\&([^\:]*)/) {
7162: my $value = $1;
7163: if ($priv eq 'bre') {
7164: if ($noblockcheck) {
7165: $thisallowed.=$value;
7166: } else {
7167: my @blockers = &has_comm_blocking($priv,$symb,$refuri);
7168: if (@blockers > 0) {
7169: $thisallowed = 'B';
7170: } else {
7171: $thisallowed.=$value;
7172: }
7173: }
7174: } else {
7175: $thisallowed.=$value;
7176: }
7177: $uri=$refuri;
7178: $statecond=$refstatecond;
7179: }
7180: }
7181: }
7182: }
7183: }
7184:
7185: #
7186: # Gathered now: all privileges that could apply, and condition number
7187: #
7188: #
7189: # Full or no access?
7190: #
7191:
7192: if ($thisallowed=~/F/) {
7193: return 'F';
7194: }
7195:
7196: unless ($thisallowed) {
7197: return '';
7198: }
7199:
7200: # Restrictions exist, deal with them
7201: #
7202: # C:according to course preferences
7203: # R:according to resource settings
7204: # L:unless locked
7205: # X:according to user session state
7206: #
7207:
7208: # Possibly locked functionality, check all courses
7209: # Locks might take effect only after 10 minutes cache expiration for other
7210: # courses, and 2 minutes for current course
7211:
7212: my $envkey;
7213: if ($thisallowed=~/L/) {
7214: foreach $envkey (keys(%env)) {
7215: if ($envkey=~/^user\.role\.(st|ta)\.([^\.]*)/) {
7216: my $courseid=$2;
7217: my $roleid=$1.'.'.$2;
7218: $courseid=~s/^\///;
7219: my $expiretime=600;
7220: if ($env{'request.role'} eq $roleid) {
7221: $expiretime=120;
7222: }
7223: my ($cdom,$cnum,$csec)=split(/\//,$courseid);
7224: my $prefix='course.'.$cdom.'_'.$cnum.'.';
7225: if ((time-$env{$prefix.'last_cache'})>$expiretime) {
7226: &coursedescription($courseid,{'freshen_cache' => 1});
7227: }
7228: if (($env{$prefix.'res.'.$uri.'.lock.sections'}=~/\,\Q$csec\E\,/)
7229: || ($env{$prefix.'res.'.$uri.'.lock.sections'} eq 'all')) {
7230: if ($env{$prefix.'res.'.$uri.'.lock.expire'}>time) {
7231: &log($env{'user.domain'},$env{'user.name'},
7232: $env{'user.home'},
7233: 'Locked by res: '.$priv.' for '.$uri.' due to '.
7234: $cdom.'/'.$cnum.'/'.$csec.' expire '.
7235: $env{$prefix.'priv.'.$priv.'.lock.expire'});
7236: return '';
7237: }
7238: }
7239: if (($env{$prefix.'priv.'.$priv.'.lock.sections'}=~/\,\Q$csec\E\,/)
7240: || ($env{$prefix.'priv.'.$priv.'.lock.sections'} eq 'all')) {
7241: if ($env{'priv.'.$priv.'.lock.expire'}>time) {
7242: &log($env{'user.domain'},$env{'user.name'},
7243: $env{'user.home'},
7244: 'Locked by priv: '.$priv.' for '.$uri.' due to '.
7245: $cdom.'/'.$cnum.'/'.$csec.' expire '.
7246: $env{$prefix.'priv.'.$priv.'.lock.expire'});
7247: return '';
7248: }
7249: }
7250: }
7251: }
7252: }
7253:
7254: #
7255: # Rest of the restrictions depend on selected course
7256: #
7257:
7258: unless ($env{'request.course.id'}) {
7259: if ($thisallowed eq 'A') {
7260: return 'A';
7261: } elsif ($thisallowed eq 'B') {
7262: return 'B';
7263: } else {
7264: return '1';
7265: }
7266: }
7267:
7268: #
7269: # Now user is definitely in a course
7270: #
7271:
7272:
7273: # Course preferences
7274:
7275: if ($thisallowed=~/C/) {
7276: my $rolecode=(split(/\./,$env{'request.role'}))[0];
7277: my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
7278: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
7279: =~/\Q$rolecode\E/) {
7280: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
7281: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
7282: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
7283: $env{'request.course.id'});
7284: }
7285: return '';
7286: }
7287:
7288: if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
7289: =~/\Q$unamedom\E/) {
7290: if (($priv ne 'pch') && ($priv ne 'plc') && ($priv ne 'pac')) {
7291: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
7292: 'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
7293: $env{'request.course.id'});
7294: }
7295: return '';
7296: }
7297: }
7298:
7299: # Resource preferences
7300:
7301: if ($thisallowed=~/R/) {
7302: my $rolecode=(split(/\./,$env{'request.role'}))[0];
7303: if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
7304: if (($priv ne 'pch') && ($priv ne 'plc')) {
7305: &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
7306: 'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
7307: }
7308: return '';
7309: }
7310: }
7311:
7312: # Restricted by state or randomout?
7313:
7314: if ($thisallowed=~/X/) {
7315: if ($env{'acc.randomout'}) {
7316: if (!$symb) { $symb=&symbread($uri,1); }
7317: if (($symb) && ($env{'acc.randomout'}=~/\&\Q$symb\E\&/)) {
7318: return '';
7319: }
7320: }
7321: if (&condval($statecond)) {
7322: return '2';
7323: } else {
7324: return '';
7325: }
7326: }
7327:
7328: if ($thisallowed eq 'A') {
7329: return 'A';
7330: } elsif ($thisallowed eq 'B') {
7331: return 'B';
7332: }
7333: return 'F';
7334: }
7335:
7336: # ------------------------------------------- Check construction space access
7337:
7338: sub constructaccess {
7339: my ($url,$setpriv)=@_;
7340:
7341: # We do not allow editing of previous versions of files
7342: if ($url=~/\.(\d+)\.(\w+)$/) { return ''; }
7343:
7344: # Get username and domain from URL
7345: my ($ownername,$ownerdomain,$ownerhome);
7346:
7347: ($ownerdomain,$ownername) =
7348: ($url=~ m{^(?:\Q$perlvar{'lonDocRoot'}\E|)(?:/daxepage|/daxeopen)?/priv/($match_domain)/($match_username)/});
7349:
7350: # The URL does not really point to any authorspace, forget it
7351: unless (($ownername) && ($ownerdomain)) { return ''; }
7352:
7353: # Now we need to see if the user has access to the authorspace of
7354: # $ownername at $ownerdomain
7355:
7356: if (($ownername eq $env{'user.name'}) && ($ownerdomain eq $env{'user.domain'})) {
7357: # Real author for this?
7358: $ownerhome = $env{'user.home'};
7359: if (exists($env{'user.priv.au./'.$ownerdomain.'/./'})) {
7360: return ($ownername,$ownerdomain,$ownerhome);
7361: }
7362: } else {
7363: # Co-author for this?
7364: if (exists($env{'user.priv.ca./'.$ownerdomain.'/'.$ownername.'./'}) ||
7365: exists($env{'user.priv.aa./'.$ownerdomain.'/'.$ownername.'./'}) ) {
7366: $ownerhome = &homeserver($ownername,$ownerdomain);
7367: return ($ownername,$ownerdomain,$ownerhome);
7368: }
7369: }
7370:
7371: # We don't have any access right now. If we are not possibly going to do anything about this,
7372: # we might as well leave
7373: unless ($setpriv) { return ''; }
7374:
7375: # Backdoor access?
7376: my $allowed=&allowed('eco',$ownerdomain);
7377: # Nope
7378: unless ($allowed) { return ''; }
7379: # Looks like we may have access, but could be locked by the owner of the construction space
7380: if ($allowed eq 'U') {
7381: my %blocked=&get('environment',['domcoord.author'],
7382: $ownerdomain,$ownername);
7383: # Is blocked by owner
7384: if ($blocked{'domcoord.author'} eq 'blocked') { return ''; }
7385: }
7386: if (($allowed eq 'F') || ($allowed eq 'U')) {
7387: # Grant temporary access
7388: my $then=$env{'user.login.time'};
7389: my $update=$env{'user.update.time'};
7390: if (!$update) { $update = $then; }
7391: my $refresh=$env{'user.refresh.time'};
7392: if (!$refresh) { $refresh = $update; }
7393: my $now = time;
7394: &check_adhoc_privs($ownerdomain,$ownername,$update,$refresh,
7395: $now,'ca','constructaccess');
7396: $ownerhome = &homeserver($ownername,$ownerdomain);
7397: return($ownername,$ownerdomain,$ownerhome);
7398: }
7399: # No business here
7400: return '';
7401: }
7402:
7403: # ----------------------------------------------------------- Content Blocking
7404:
7405: {
7406: # Caches for faster Course Contents display where content blocking
7407: # is in operation (i.e., interval param set) for timed quiz.
7408: #
7409: # User for whom data are being temporarily cached.
7410: my $cacheduser='';
7411: # Cached blockers for this user (a hash of blocking items).
7412: my %cachedblockers=();
7413: # When the data were last cached.
7414: my $cachedlast='';
7415:
7416: sub load_all_blockers {
7417: my ($uname,$udom,$blocks)=@_;
7418: if (($uname ne '') && ($udom ne '')) {
7419: if (($cacheduser eq $uname.':'.$udom) &&
7420: (abs($cachedlast-time)<5)) {
7421: return;
7422: }
7423: }
7424: $cachedlast=time;
7425: $cacheduser=$uname.':'.$udom;
7426: %cachedblockers = &get_commblock_resources($blocks);
7427: }
7428:
7429: sub get_comm_blocks {
7430: my ($cdom,$cnum) = @_;
7431: if ($cdom eq '' || $cnum eq '') {
7432: return unless ($env{'request.course.id'});
7433: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
7434: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
7435: }
7436: my %commblocks;
7437: my $hashid=$cdom.'_'.$cnum;
7438: my ($blocksref,$cached)=&is_cached_new('comm_block',$hashid);
7439: if ((defined($cached)) && (ref($blocksref) eq 'HASH')) {
7440: %commblocks = %{$blocksref};
7441: } else {
7442: %commblocks = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
7443: my $cachetime = 600;
7444: &do_cache_new('comm_block',$hashid,\%commblocks,$cachetime);
7445: }
7446: return %commblocks;
7447: }
7448:
7449: sub get_commblock_resources {
7450: my ($blocks) = @_;
7451: my %blockers = ();
7452: return %blockers unless ($env{'request.course.id'});
7453: return %blockers if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
7454: my %commblocks;
7455: if (ref($blocks) eq 'HASH') {
7456: %commblocks = %{$blocks};
7457: } else {
7458: %commblocks = &get_comm_blocks();
7459: }
7460: return %blockers unless (keys(%commblocks) > 0);
7461: my $navmap = Apache::lonnavmaps::navmap->new();
7462: return %blockers unless (ref($navmap));
7463: my $now = time;
7464: foreach my $block (keys(%commblocks)) {
7465: if ($block =~ /^(\d+)____(\d+)$/) {
7466: my ($start,$end) = ($1,$2);
7467: if ($start <= $now && $end >= $now) {
7468: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
7469: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
7470: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
7471: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
7472: $blockers{$block}{maps} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
7473: }
7474: }
7475: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
7476: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
7477: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
7478: }
7479: }
7480: }
7481: }
7482: }
7483: } elsif ($block =~ /^firstaccess____(.+)$/) {
7484: my $item = $1;
7485: my @to_test;
7486: if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
7487: if (ref($commblocks{$block}{'blocks'}{'docs'}) eq 'HASH') {
7488: my @interval;
7489: my $type = 'map';
7490: if ($item eq 'course') {
7491: $type = 'course';
7492: @interval=&EXT("resource.0.interval");
7493: } else {
7494: if ($item =~ /___\d+___/) {
7495: $type = 'resource';
7496: @interval=&EXT("resource.0.interval",$item);
7497: if (ref($navmap)) {
7498: my $res = $navmap->getBySymb($item);
7499: push(@to_test,$res);
7500: }
7501: } else {
7502: my $mapsymb = &symbread($item,1);
7503: if ($mapsymb) {
7504: if (ref($navmap)) {
7505: my $mapres = $navmap->getBySymb($mapsymb);
7506: @to_test = $mapres->retrieveResources($mapres,undef,0,0,0,1);
7507: foreach my $res (@to_test) {
7508: my $symb = $res->symb();
7509: next if ($symb eq $mapsymb);
7510: if ($symb ne '') {
7511: @interval=&EXT("resource.0.interval",$symb);
7512: if ($interval[1] eq 'map') {
7513: last;
7514: }
7515: }
7516: }
7517: }
7518: }
7519: }
7520: }
7521: if ($interval[0] =~ /^\d+/) {
7522: my ($timelimit) = split(/_/,$interval[0]);
7523: my $first_access;
7524: if ($type eq 'resource') {
7525: $first_access=&get_first_access($interval[1],$item);
7526: } elsif ($type eq 'map') {
7527: $first_access=&get_first_access($interval[1],undef,$item);
7528: } else {
7529: $first_access=&get_first_access($interval[1]);
7530: }
7531: if ($first_access) {
7532: my $timesup = $first_access+$timelimit;
7533: if ($timesup > $now) {
7534: my $activeblock;
7535: foreach my $res (@to_test) {
7536: if ($res->answerable()) {
7537: $activeblock = 1;
7538: last;
7539: }
7540: }
7541: if ($activeblock) {
7542: if (ref($commblocks{$block}{'blocks'}{'docs'}{'maps'}) eq 'HASH') {
7543: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'maps'}})) {
7544: $blockers{$block}{'maps'} = $commblocks{$block}{'blocks'}{'docs'}{'maps'};
7545: }
7546: }
7547: if (ref($commblocks{$block}{'blocks'}{'docs'}{'resources'}) eq 'HASH') {
7548: if (keys(%{$commblocks{$block}{'blocks'}{'docs'}{'resources'}})) {
7549: $blockers{$block}{'resources'} = $commblocks{$block}{'blocks'}{'docs'}{'resources'};
7550: }
7551: }
7552: }
7553: }
7554: }
7555: }
7556: }
7557: }
7558: }
7559: }
7560: return %blockers;
7561: }
7562:
7563: sub has_comm_blocking {
7564: my ($priv,$symb,$uri,$blocks) = @_;
7565: my @blockers;
7566: return unless ($env{'request.course.id'});
7567: return unless ($priv eq 'bre');
7568: return if ($env{'user.priv.'.$env{'request.role'}} =~/evb\&([^\:]*)/);
7569: return if ($env{'request.state'} eq 'construct');
7570: &load_all_blockers($env{'user.name'},$env{'user.domain'},$blocks);
7571: return unless (keys(%cachedblockers) > 0);
7572: my (%possibles,@symbs);
7573: if (!$symb) {
7574: $symb = &symbread($uri,1,1,1,\%possibles);
7575: }
7576: if ($symb) {
7577: @symbs = ($symb);
7578: } elsif (keys(%possibles)) {
7579: @symbs = keys(%possibles);
7580: }
7581: my $noblock;
7582: foreach my $symb (@symbs) {
7583: last if ($noblock);
7584: my ($map,$resid,$resurl)=&decode_symb($symb);
7585: foreach my $block (keys(%cachedblockers)) {
7586: if ($block =~ /^firstaccess____(.+)$/) {
7587: my $item = $1;
7588: if (($item eq $map) || ($item eq $symb)) {
7589: $noblock = 1;
7590: last;
7591: }
7592: }
7593: if (ref($cachedblockers{$block}) eq 'HASH') {
7594: if (ref($cachedblockers{$block}{'resources'}) eq 'HASH') {
7595: if ($cachedblockers{$block}{'resources'}{$symb}) {
7596: unless (grep(/^\Q$block\E$/,@blockers)) {
7597: push(@blockers,$block);
7598: }
7599: }
7600: }
7601: }
7602: if (ref($cachedblockers{$block}{'maps'}) eq 'HASH') {
7603: if ($cachedblockers{$block}{'maps'}{$map}) {
7604: unless (grep(/^\Q$block\E$/,@blockers)) {
7605: push(@blockers,$block);
7606: }
7607: }
7608: }
7609: }
7610: }
7611: return if ($noblock);
7612: return @blockers;
7613: }
7614: }
7615:
7616: # -------------------------------- Deversion and split uri into path an filename
7617:
7618: #
7619: # Removes the version from a URI and
7620: # splits it in to its filename and path to the filename.
7621: # Seems like File::Basename could have done this more clearly.
7622: # Parameters:
7623: # $uri - input URI
7624: # Returns:
7625: # Two element list consisting of
7626: # $pathname - the URI up to and excluding the trailing /
7627: # $filename - The part of the URI following the last /
7628: # NOTE:
7629: # Another realization of this is simply:
7630: # use File::Basename;
7631: # ...
7632: # $uri = shift;
7633: # $filename = basename($uri);
7634: # $path = dirname($uri);
7635: # return ($filename, $path);
7636: #
7637: # The implementation below is probably faster however.
7638: #
7639: sub split_uri_for_cond {
7640: my $uri=&deversion(&declutter(shift));
7641: my @uriparts=split(/\//,$uri);
7642: my $filename=pop(@uriparts);
7643: my $pathname=join('/',@uriparts);
7644: return ($pathname,$filename);
7645: }
7646: # --------------------------------------------------- Is a resource on the map?
7647:
7648: sub is_on_map {
7649: my ($pathname,$filename) = &split_uri_for_cond(shift);
7650: #Trying to find the conditional for the file
7651: my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
7652: /\&\Q$filename\E\:([\d\|]+)\&/);
7653: if ($match) {
7654: return (1,$1);
7655: } else {
7656: return (0,0);
7657: }
7658: }
7659:
7660: # --------------------------------------------------------- Get symb from alias
7661:
7662: sub get_symb_from_alias {
7663: my $symb=shift;
7664: my ($map,$resid,$url)=&decode_symb($symb);
7665: # Already is a symb
7666: if ($url) { return $symb; }
7667: # Must be an alias
7668: my $aliassymb='';
7669: my %bighash;
7670: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
7671: &GDBM_READER(),0640)) {
7672: my $rid=$bighash{'mapalias_'.$symb};
7673: if ($rid) {
7674: my ($mapid,$resid)=split(/\./,$rid);
7675: $aliassymb=&encode_symb($bighash{'map_id_'.$mapid},
7676: $resid,$bighash{'src_'.$rid});
7677: }
7678: untie %bighash;
7679: }
7680: return $aliassymb;
7681: }
7682:
7683: # ----------------------------------------------------------------- Define Role
7684:
7685: sub definerole {
7686: if (allowed('mcr','/')) {
7687: my ($rolename,$sysrole,$domrole,$courole)=@_;
7688: foreach my $role (split(':',$sysrole)) {
7689: my ($crole,$cqual)=split(/\&/,$role);
7690: if ($pr{'cr:s'}!~/\Q$crole\E/) { return "refused:s:$crole"; }
7691: if ($pr{'cr:s'}=~/\Q$crole\E\&/) {
7692: if ($pr{'cr:s'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7693: return "refused:s:$crole&$cqual";
7694: }
7695: }
7696: }
7697: foreach my $role (split(':',$domrole)) {
7698: my ($crole,$cqual)=split(/\&/,$role);
7699: if ($pr{'cr:d'}!~/\Q$crole\E/) { return "refused:d:$crole"; }
7700: if ($pr{'cr:d'}=~/\Q$crole\E\&/) {
7701: if ($pr{'cr:d'}!~/\Q$crole\W\&\w*\Q$cqual\E/) {
7702: return "refused:d:$crole&$cqual";
7703: }
7704: }
7705: }
7706: foreach my $role (split(':',$courole)) {
7707: my ($crole,$cqual)=split(/\&/,$role);
7708: if ($pr{'cr:c'}!~/\Q$crole\E/) { return "refused:c:$crole"; }
7709: if ($pr{'cr:c'}=~/\Q$crole\E\&/) {
7710: if ($pr{'cr:c'}!~/\Q$crole\E\&\w*\Q$cqual\E/) {
7711: return "refused:c:$crole&$cqual";
7712: }
7713: }
7714: }
7715: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
7716: "$env{'user.domain'}:$env{'user.name'}:".
7717: "rolesdef_$rolename=".
7718: escape($sysrole.'_'.$domrole.'_'.$courole);
7719: return reply($command,$env{'user.home'});
7720: } else {
7721: return 'refused';
7722: }
7723: }
7724:
7725: # ---------------- Make a metadata query against the network of library servers
7726:
7727: sub metadata_query {
7728: my ($query,$custom,$customshow,$server_array,$domains_hash)=@_;
7729: my %rhash;
7730: my %libserv = &all_library();
7731: my @server_list = (defined($server_array) ? @$server_array
7732: : keys(%libserv) );
7733: for my $server (@server_list) {
7734: my $domains = '';
7735: if (ref($domains_hash) eq 'HASH') {
7736: $domains = $domains_hash->{$server};
7737: }
7738: unless ($custom or $customshow) {
7739: my $reply=&reply("querysend:".&escape($query).':::'.&escape($domains),$server);
7740: $rhash{$server}=$reply;
7741: }
7742: else {
7743: my $reply=&reply("querysend:".&escape($query).':'.
7744: &escape($custom).':'.&escape($customshow).':'.&escape($domains),
7745: $server);
7746: $rhash{$server}=$reply;
7747: }
7748: }
7749: return \%rhash;
7750: }
7751:
7752: # ----------------------------------------- Send log queries and wait for reply
7753:
7754: sub log_query {
7755: my ($uname,$udom,$query,%filters)=@_;
7756: my $uhome=&homeserver($uname,$udom);
7757: if ($uhome eq 'no_host') { return 'error: no_host'; }
7758: my $uhost=&hostname($uhome);
7759: my $command=&escape(join(':',map{$_.'='.$filters{$_}} keys(%filters)));
7760: my $queryid=&reply("querysend:".$query.':'.$udom.':'.$uname.':'.$command,
7761: $uhome);
7762: unless ($queryid=~/^\Q$uhost\E\_/) { return 'error: '.$queryid; }
7763: return get_query_reply($queryid);
7764: }
7765:
7766: # -------------------------- Update MySQL table for portfolio file
7767:
7768: sub update_portfolio_table {
7769: my ($uname,$udom,$file_name,$query,$group,$action) = @_;
7770: if ($group ne '') {
7771: $file_name =~s /^\Q$group\E//;
7772: }
7773: my $homeserver = &homeserver($uname,$udom);
7774: my $queryid=
7775: &reply("querysend:".$query.':'.&escape($uname.':'.$udom.':'.$group).
7776: ':'.&escape($file_name).':'.$action,$homeserver);
7777: my $reply = &get_query_reply($queryid);
7778: return $reply;
7779: }
7780:
7781: # -------------------------- Update MySQL allusers table
7782:
7783: sub update_allusers_table {
7784: my ($uname,$udom,$names) = @_;
7785: my $homeserver = &homeserver($uname,$udom);
7786: my $queryid=
7787: &reply('querysend:allusers:'.&escape($uname).':'.&escape($udom).':'.
7788: 'lastname='.&escape($names->{'lastname'}).'%%'.
7789: 'firstname='.&escape($names->{'firstname'}).'%%'.
7790: 'middlename='.&escape($names->{'middlename'}).'%%'.
7791: 'generation='.&escape($names->{'generation'}).'%%'.
7792: 'permanentemail='.&escape($names->{'permanentemail'}).'%%'.
7793: 'id='.&escape($names->{'id'}),$homeserver);
7794: return;
7795: }
7796:
7797: # ------- Request retrieval of institutional classlists for course(s)
7798:
7799: sub fetch_enrollment_query {
7800: my ($context,$affiliatesref,$replyref,$dom,$cnum) = @_;
7801: my $homeserver;
7802: my $maxtries = 1;
7803: if ($context eq 'automated') {
7804: $homeserver = $perlvar{'lonHostID'};
7805: $maxtries = 10; # will wait for up to 2000s for retrieval of classlist data before timeout
7806: } else {
7807: $homeserver = &homeserver($cnum,$dom);
7808: }
7809: my $host=&hostname($homeserver);
7810: my $cmd = '';
7811: foreach my $affiliate (keys(%{$affiliatesref})) {
7812: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
7813: }
7814: $cmd =~ s/%%$//;
7815: $cmd = &escape($cmd);
7816: my $query = 'fetchenrollment';
7817: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$env{'user.name'}.':'.$cmd,$homeserver);
7818: unless ($queryid=~/^\Q$host\E\_/) {
7819: &logthis('fetch_enrollment_query: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' context: '.$context.' '.$cnum);
7820: return 'error: '.$queryid;
7821: }
7822: my $reply = &get_query_reply($queryid);
7823: my $tries = 1;
7824: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
7825: $reply = &get_query_reply($queryid);
7826: $tries ++;
7827: }
7828: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
7829: &logthis('fetch_enrollment_query error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' context: '.$context.' '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
7830: } else {
7831: my @responses = split(/:/,$reply);
7832: if ($homeserver eq $perlvar{'lonHostID'}) {
7833: foreach my $line (@responses) {
7834: my ($key,$value) = split(/=/,$line,2);
7835: $$replyref{$key} = $value;
7836: }
7837: } else {
7838: my $pathname = LONCAPA::tempdir();
7839: foreach my $line (@responses) {
7840: my ($key,$value) = split(/=/,$line);
7841: $$replyref{$key} = $value;
7842: if ($value > 0) {
7843: foreach my $item (@{$$affiliatesref{$key}}) {
7844: my $filename = $dom.'_'.$key.'_'.$item.'_classlist.xml';
7845: my $destname = $pathname.'/'.$filename;
7846: my $xml_classlist = &reply("autoretrieve:".$filename,$homeserver);
7847: if ($xml_classlist =~ /^error/) {
7848: &logthis('fetch_enrollment_query - autoretrieve error: '.$xml_classlist.' for '.$filename.' from server: '.$homeserver.' '.$context.' '.$cnum);
7849: } else {
7850: if ( open(FILE,">$destname") ) {
7851: print FILE &unescape($xml_classlist);
7852: close(FILE);
7853: } else {
7854: &logthis('fetch_enrollment_query - error opening classlist file '.$destname.' '.$context.' '.$cnum);
7855: }
7856: }
7857: }
7858: }
7859: }
7860: }
7861: return 'ok';
7862: }
7863: return 'error';
7864: }
7865:
7866: sub get_query_reply {
7867: my $queryid=shift;
7868: my $replyfile=LONCAPA::tempdir().$queryid;
7869: my $reply='';
7870: for (1..100) {
7871: sleep(0.2);
7872: if (-e $replyfile.'.end') {
7873: if (open(my $fh,$replyfile)) {
7874: $reply = join('',<$fh>);
7875: close($fh);
7876: } else { return 'error: reply_file_error'; }
7877: return &unescape($reply);
7878: }
7879: }
7880: return 'timeout:'.$queryid;
7881: }
7882:
7883: sub courselog_query {
7884: #
7885: # possible filters:
7886: # url: url or symb
7887: # username
7888: # domain
7889: # action: view, submit, grade
7890: # start: timestamp
7891: # end: timestamp
7892: #
7893: my (%filters)=@_;
7894: unless ($env{'request.course.id'}) { return 'no_course'; }
7895: if ($filters{'url'}) {
7896: $filters{'url'}=&symbclean(&declutter($filters{'url'}));
7897: $filters{'url'}=~s/\.(\w+)$/(\\.\\d+)*\\.$1/;
7898: $filters{'url'}=~s/\.(\w+)\_\_\_/(\\.\\d+)*\\.$1/;
7899: }
7900: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
7901: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
7902: return &log_query($cname,$cdom,'courselog',%filters);
7903: }
7904:
7905: sub userlog_query {
7906: #
7907: # possible filters:
7908: # action: log check role
7909: # start: timestamp
7910: # end: timestamp
7911: #
7912: my ($uname,$udom,%filters)=@_;
7913: return &log_query($uname,$udom,'userlog',%filters);
7914: }
7915:
7916: #--------- Call auto-enrollment subs in localenroll.pm for homeserver for course
7917:
7918: sub auto_run {
7919: my ($cnum,$cdom) = @_;
7920: my $response = 0;
7921: my $settings;
7922: my %domconfig = &get_dom('configuration',['autoenroll'],$cdom);
7923: if (ref($domconfig{'autoenroll'}) eq 'HASH') {
7924: $settings = $domconfig{'autoenroll'};
7925: if ($settings->{'run'} eq '1') {
7926: $response = 1;
7927: }
7928: } else {
7929: my $homeserver;
7930: if (&is_course($cdom,$cnum)) {
7931: $homeserver = &homeserver($cnum,$cdom);
7932: } else {
7933: $homeserver = &domain($cdom,'primary');
7934: }
7935: if ($homeserver ne 'no_host') {
7936: $response = &reply('autorun:'.$cdom,$homeserver);
7937: }
7938: }
7939: return $response;
7940: }
7941:
7942: sub auto_get_sections {
7943: my ($cnum,$cdom,$inst_coursecode) = @_;
7944: my $homeserver;
7945: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7946: $homeserver = &homeserver($cnum,$cdom);
7947: }
7948: if (!defined($homeserver)) {
7949: if ($cdom =~ /^$match_domain$/) {
7950: $homeserver = &domain($cdom,'primary');
7951: }
7952: }
7953: my @secs;
7954: if (defined($homeserver)) {
7955: my $response=&unescape(&reply('autogetsections:'.$inst_coursecode.':'.$cdom,$homeserver));
7956: unless ($response eq 'refused') {
7957: @secs = split(/:/,$response);
7958: }
7959: }
7960: return @secs;
7961: }
7962:
7963: sub auto_new_course {
7964: my ($cnum,$cdom,$inst_course_id,$owner,$coowners) = @_;
7965: my $homeserver = &homeserver($cnum,$cdom);
7966: my $response=&unescape(&reply('autonewcourse:'.$inst_course_id.':'.&escape($owner).':'.$cdom.':'.&escape($coowners),$homeserver));
7967: return $response;
7968: }
7969:
7970: sub auto_validate_courseID {
7971: my ($cnum,$cdom,$inst_course_id) = @_;
7972: my $homeserver = &homeserver($cnum,$cdom);
7973: my $response=&unescape(&reply('autovalidatecourse:'.$inst_course_id.':'.$cdom,$homeserver));
7974: return $response;
7975: }
7976:
7977: sub auto_validate_instcode {
7978: my ($cnum,$cdom,$instcode,$owner) = @_;
7979: my ($homeserver,$response);
7980: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
7981: $homeserver = &homeserver($cnum,$cdom);
7982: }
7983: if (!defined($homeserver)) {
7984: if ($cdom =~ /^$match_domain$/) {
7985: $homeserver = &domain($cdom,'primary');
7986: }
7987: }
7988: $response=&unescape(&reply('autovalidateinstcode:'.$cdom.':'.
7989: &escape($instcode).':'.&escape($owner),$homeserver));
7990: my ($outcome,$description,$defaultcredits) = map { &unescape($_); } split('&',$response,3);
7991: return ($outcome,$description,$defaultcredits);
7992: }
7993:
7994: sub auto_create_password {
7995: my ($cnum,$cdom,$authparam,$udom) = @_;
7996: my ($homeserver,$response);
7997: my $create_passwd = 0;
7998: my $authchk = '';
7999: if ($udom =~ /^$match_domain$/) {
8000: $homeserver = &domain($udom,'primary');
8001: }
8002: if ($homeserver eq '') {
8003: if (($cdom =~ /^$match_domain$/) && ($cnum =~ /^$match_courseid$/)) {
8004: $homeserver = &homeserver($cnum,$cdom);
8005: }
8006: }
8007: if ($homeserver eq '') {
8008: $authchk = 'nodomain';
8009: } else {
8010: $response=&unescape(&reply('autocreatepassword:'.$authparam.':'.$cdom,$homeserver));
8011: if ($response eq 'refused') {
8012: $authchk = 'refused';
8013: } else {
8014: ($authparam,$create_passwd,$authchk) = split(/:/,$response);
8015: }
8016: }
8017: return ($authparam,$create_passwd,$authchk);
8018: }
8019:
8020: sub auto_photo_permission {
8021: my ($cnum,$cdom,$students) = @_;
8022: my $homeserver = &homeserver($cnum,$cdom);
8023: my ($outcome,$perm_reqd,$conditions) =
8024: split(/:/,&unescape(&reply('autophotopermission:'.$cdom,$homeserver)),3);
8025: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8026: return (undef,undef);
8027: }
8028: return ($outcome,$perm_reqd,$conditions);
8029: }
8030:
8031: sub auto_checkphotos {
8032: my ($uname,$udom,$pid) = @_;
8033: my $homeserver = &homeserver($uname,$udom);
8034: my ($result,$resulttype);
8035: my $outcome = &unescape(&reply('autophotocheck:'.&escape($udom).':'.
8036: &escape($uname).':'.&escape($pid),
8037: $homeserver));
8038: if ($outcome =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8039: return (undef,undef);
8040: }
8041: if ($outcome) {
8042: ($result,$resulttype) = split(/:/,$outcome);
8043: }
8044: return ($result,$resulttype);
8045: }
8046:
8047: sub auto_photochoice {
8048: my ($cnum,$cdom) = @_;
8049: my $homeserver = &homeserver($cnum,$cdom);
8050: my ($update,$comment) = split(/:/,&unescape(&reply('autophotochoice:'.
8051: &escape($cdom),
8052: $homeserver)));
8053: if ($update =~ /^(con_lost|unknown_cmd|no_such_host)$/) {
8054: return (undef,undef);
8055: }
8056: return ($update,$comment);
8057: }
8058:
8059: sub auto_photoupdate {
8060: my ($affiliatesref,$dom,$cnum,$photo) = @_;
8061: my $homeserver = &homeserver($cnum,$dom);
8062: my $host=&hostname($homeserver);
8063: my $cmd = '';
8064: my $maxtries = 1;
8065: foreach my $affiliate (keys(%{$affiliatesref})) {
8066: $cmd .= $affiliate.'='.join(",",@{$$affiliatesref{$affiliate}}).'%%';
8067: }
8068: $cmd =~ s/%%$//;
8069: $cmd = &escape($cmd);
8070: my $query = 'institutionalphotos';
8071: my $queryid=&reply("querysend:".$query.':'.$dom.':'.$cnum.':'.$cmd,$homeserver);
8072: unless ($queryid=~/^\Q$host\E\_/) {
8073: &logthis('institutionalphotos: invalid queryid: '.$queryid.' for host: '.$host.' and homeserver: '.$homeserver.' and course: '.$cnum);
8074: return 'error: '.$queryid;
8075: }
8076: my $reply = &get_query_reply($queryid);
8077: my $tries = 1;
8078: while (($reply=~/^timeout/) && ($tries < $maxtries)) {
8079: $reply = &get_query_reply($queryid);
8080: $tries ++;
8081: }
8082: if ( ($reply =~/^timeout/) || ($reply =~/^error/) ) {
8083: &logthis('institutionalphotos error: '.$reply.' for '.$dom.' '.$env{'user.name'}.' for '.$queryid.' course: '.$cnum.' maxtries: '.$maxtries.' tries: '.$tries);
8084: } else {
8085: my @responses = split(/:/,$reply);
8086: my $outcome = shift(@responses);
8087: foreach my $item (@responses) {
8088: my ($key,$value) = split(/=/,$item);
8089: $$photo{$key} = $value;
8090: }
8091: return $outcome;
8092: }
8093: return 'error';
8094: }
8095:
8096: sub auto_instcode_format {
8097: my ($caller,$codedom,$instcodes,$codes,$codetitles,$cat_titles,
8098: $cat_order) = @_;
8099: my $courses = '';
8100: my @homeservers;
8101: if ($caller eq 'global') {
8102: my %servers = &get_servers($codedom,'library');
8103: foreach my $tryserver (keys(%servers)) {
8104: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8105: push(@homeservers,$tryserver);
8106: }
8107: }
8108: } elsif ($caller eq 'requests') {
8109: if ($codedom =~ /^$match_domain$/) {
8110: my $chome = &domain($codedom,'primary');
8111: unless ($chome eq 'no_host') {
8112: push(@homeservers,$chome);
8113: }
8114: }
8115: } else {
8116: push(@homeservers,&homeserver($caller,$codedom));
8117: }
8118: foreach my $code (keys(%{$instcodes})) {
8119: $courses .= &escape($code).'='.&escape($$instcodes{$code}).'&';
8120: }
8121: chop($courses);
8122: my $ok_response = 0;
8123: my $response;
8124: while (@homeservers > 0 && $ok_response == 0) {
8125: my $server = shift(@homeservers);
8126: $response=&reply('autoinstcodeformat:'.$codedom.':'.$courses,$server);
8127: if ($response !~ /(con_lost|error|no_such_host|refused)/) {
8128: my ($codes_str,$codetitles_str,$cat_titles_str,$cat_order_str) =
8129: split(/:/,$response);
8130: %{$codes} = (%{$codes},&str2hash($codes_str));
8131: push(@{$codetitles},&str2array($codetitles_str));
8132: %{$cat_titles} = (%{$cat_titles},&str2hash($cat_titles_str));
8133: %{$cat_order} = (%{$cat_order},&str2hash($cat_order_str));
8134: $ok_response = 1;
8135: }
8136: }
8137: if ($ok_response) {
8138: return 'ok';
8139: } else {
8140: return $response;
8141: }
8142: }
8143:
8144: sub auto_instcode_defaults {
8145: my ($domain,$returnhash,$code_order) = @_;
8146: my @homeservers;
8147:
8148: my %servers = &get_servers($domain,'library');
8149: foreach my $tryserver (keys(%servers)) {
8150: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8151: push(@homeservers,$tryserver);
8152: }
8153: }
8154:
8155: my $response;
8156: foreach my $server (@homeservers) {
8157: $response=&reply('autoinstcodedefaults:'.$domain,$server);
8158: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
8159:
8160: foreach my $pair (split(/\&/,$response)) {
8161: my ($name,$value)=split(/\=/,$pair);
8162: if ($name eq 'code_order') {
8163: @{$code_order} = split(/\&/,&unescape($value));
8164: } else {
8165: $returnhash->{&unescape($name)}=&unescape($value);
8166: }
8167: }
8168: return 'ok';
8169: }
8170:
8171: return $response;
8172: }
8173:
8174: sub auto_possible_instcodes {
8175: my ($domain,$codetitles,$cat_titles,$cat_orders,$code_order) = @_;
8176: unless ((ref($codetitles) eq 'ARRAY') && (ref($cat_titles) eq 'HASH') &&
8177: (ref($cat_orders) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
8178: return;
8179: }
8180: my (@homeservers,$uhome);
8181: if (defined(&domain($domain,'primary'))) {
8182: $uhome=&domain($domain,'primary');
8183: push(@homeservers,&domain($domain,'primary'));
8184: } else {
8185: my %servers = &get_servers($domain,'library');
8186: foreach my $tryserver (keys(%servers)) {
8187: if (!grep(/^\Q$tryserver\E$/,@homeservers)) {
8188: push(@homeservers,$tryserver);
8189: }
8190: }
8191: }
8192: my $response;
8193: foreach my $server (@homeservers) {
8194: $response=&reply('autopossibleinstcodes:'.$domain,$server);
8195: next if ($response =~ /(con_lost|error|no_such_host|refused)/);
8196: my ($codetitlestr,$codeorderstr,$cat_title,$cat_order) =
8197: split(':',$response);
8198: @{$codetitles} = map { &unescape($_); } (split('&',$codetitlestr));
8199: @{$code_order} = map { &unescape($_); } (split('&',$codeorderstr));
8200: foreach my $item (split('&',$cat_title)) {
8201: my ($name,$value)=split('=',$item);
8202: $cat_titles->{&unescape($name)}=&thaw_unescape($value);
8203: }
8204: foreach my $item (split('&',$cat_order)) {
8205: my ($name,$value)=split('=',$item);
8206: $cat_orders->{&unescape($name)}=&thaw_unescape($value);
8207: }
8208: return 'ok';
8209: }
8210: return $response;
8211: }
8212:
8213: sub auto_courserequest_checks {
8214: my ($dom) = @_;
8215: my ($homeserver,%validations);
8216: if ($dom =~ /^$match_domain$/) {
8217: $homeserver = &domain($dom,'primary');
8218: }
8219: unless ($homeserver eq 'no_host') {
8220: my $response=&reply('autocrsreqchecks:'.$dom,$homeserver);
8221: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
8222: my @items = split(/&/,$response);
8223: foreach my $item (@items) {
8224: my ($key,$value) = split('=',$item);
8225: $validations{&unescape($key)} = &thaw_unescape($value);
8226: }
8227: }
8228: }
8229: return %validations;
8230: }
8231:
8232: sub auto_courserequest_validation {
8233: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$custominfo) = @_;
8234: my ($homeserver,$response);
8235: if ($dom =~ /^$match_domain$/) {
8236: $homeserver = &domain($dom,'primary');
8237: }
8238: unless ($homeserver eq 'no_host') {
8239: my $customdata;
8240: if (ref($custominfo) eq 'HASH') {
8241: $customdata = &freeze_escape($custominfo);
8242: }
8243: $response=&unescape(&reply('autocrsreqvalidation:'.$dom.':'.&escape($owner).
8244: ':'.&escape($crstype).':'.&escape($inststatuslist).
8245: ':'.&escape($instcode).':'.&escape($instseclist).':'.
8246: $customdata,$homeserver));
8247: }
8248: return $response;
8249: }
8250:
8251: sub auto_validate_class_sec {
8252: my ($cdom,$cnum,$owners,$inst_class) = @_;
8253: my $homeserver = &homeserver($cnum,$cdom);
8254: my $ownerlist;
8255: if (ref($owners) eq 'ARRAY') {
8256: $ownerlist = join(',',@{$owners});
8257: } else {
8258: $ownerlist = $owners;
8259: }
8260: my $response=&reply('autovalidateclass_sec:'.$inst_class.':'.
8261: &escape($ownerlist).':'.$cdom,$homeserver);
8262: return $response;
8263: }
8264:
8265: sub auto_crsreq_update {
8266: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,
8267: $code,$accessstart,$accessend,$inbound) = @_;
8268: my ($homeserver,%crsreqresponse);
8269: if ($cdom =~ /^$match_domain$/) {
8270: $homeserver = &domain($cdom,'primary');
8271: }
8272: unless (($homeserver eq 'no_host') || ($homeserver eq '')) {
8273: my $info;
8274: if (ref($inbound) eq 'HASH') {
8275: $info = &freeze_escape($inbound);
8276: }
8277: my $response=&reply('autocrsrequpdate:'.$cdom.':'.$cnum.':'.&escape($crstype).
8278: ':'.&escape($action).':'.&escape($ownername).':'.
8279: &escape($ownerdomain).':'.&escape($fullname).':'.
8280: &escape($title).':'.&escape($code).':'.
8281: &escape($accessstart).':'.&escape($accessend).':'.$info,
8282: $homeserver);
8283: unless ($response =~ /(con_lost|error|no_such_host|refused)/) {
8284: my @items = split(/&/,$response);
8285: foreach my $item (@items) {
8286: my ($key,$value) = split('=',$item);
8287: $crsreqresponse{&unescape($key)} = &thaw_unescape($value);
8288: }
8289: }
8290: }
8291: return \%crsreqresponse;
8292: }
8293:
8294: sub auto_export_grades {
8295: my ($cnum,$cdom,$gradesref) = @_;
8296: return;
8297: }
8298:
8299: sub check_instcode_cloning {
8300: my ($codedefaults,$code_order,$cloner,$clonefromcode,$clonetocode) = @_;
8301: unless ((ref($codedefaults) eq 'HASH') && (ref($code_order) eq 'ARRAY')) {
8302: return;
8303: }
8304: my $canclone;
8305: if (@{$code_order} > 0) {
8306: my $instcoderegexp ='^';
8307: my @clonecodes = split(/\&/,$cloner);
8308: foreach my $item (@{$code_order}) {
8309: if (grep(/^\Q$item\E=/,@clonecodes)) {
8310: foreach my $pair (@clonecodes) {
8311: my ($key,$val) = split(/\=/,$pair,2);
8312: $val = &unescape($val);
8313: if ($key eq $item) {
8314: $instcoderegexp .= '('.$val.')';
8315: last;
8316: }
8317: }
8318: } else {
8319: $instcoderegexp .= $codedefaults->{$item};
8320: }
8321: }
8322: $instcoderegexp .= '$';
8323: my (@from,@to);
8324: eval {
8325: (@from) = ($clonefromcode =~ /$instcoderegexp/);
8326: (@to) = ($clonetocode =~ /$instcoderegexp/);
8327: };
8328: if ((@from > 0) && (@to > 0)) {
8329: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
8330: if (!@diffs) {
8331: $canclone = 1;
8332: }
8333: }
8334: }
8335: return $canclone;
8336: }
8337:
8338: sub default_instcode_cloning {
8339: my ($clonedom,$domdefclone,$clonefromcode,$clonetocode,$codedefaultsref,$codeorderref) = @_;
8340: my (%codedefaults,@code_order,$canclone);
8341: if ((ref($codedefaultsref) eq 'HASH') && (ref($codeorderref) eq 'ARRAY')) {
8342: %codedefaults = %{$codedefaultsref};
8343: @code_order = @{$codeorderref};
8344: } elsif ($clonedom) {
8345: &auto_instcode_defaults($clonedom,\%codedefaults,\@code_order);
8346: }
8347: if (($domdefclone) && (@code_order)) {
8348: my @clonecodes = split(/\+/,$domdefclone);
8349: my $instcoderegexp ='^';
8350: foreach my $item (@code_order) {
8351: if (grep(/^\Q$item\E$/,@clonecodes)) {
8352: $instcoderegexp .= '('.$codedefaults{$item}.')';
8353: } else {
8354: $instcoderegexp .= $codedefaults{$item};
8355: }
8356: }
8357: $instcoderegexp .= '$';
8358: my (@from,@to);
8359: eval {
8360: (@from) = ($clonefromcode =~ /$instcoderegexp/);
8361: (@to) = ($clonetocode =~ /$instcoderegexp/);
8362: };
8363: if ((@from > 0) && (@to > 0)) {
8364: my @diffs = &Apache::loncommon::compare_arrays(\@from,\@to);
8365: if (!@diffs) {
8366: $canclone = 1;
8367: }
8368: }
8369: }
8370: return $canclone;
8371: }
8372:
8373: # ------------------------------------------------------- Course Group routines
8374:
8375: sub get_coursegroups {
8376: my ($cdom,$cnum,$group,$namespace) = @_;
8377: return(&dump($namespace,$cdom,$cnum,$group));
8378: }
8379:
8380: sub modify_coursegroup {
8381: my ($cdom,$cnum,$groupsettings) = @_;
8382: return(&put('coursegroups',$groupsettings,$cdom,$cnum));
8383: }
8384:
8385: sub toggle_coursegroup_status {
8386: my ($cdom,$cnum,$group,$action) = @_;
8387: my ($from_namespace,$to_namespace);
8388: if ($action eq 'delete') {
8389: $from_namespace = 'coursegroups';
8390: $to_namespace = 'deleted_groups';
8391: } else {
8392: $from_namespace = 'deleted_groups';
8393: $to_namespace = 'coursegroups';
8394: }
8395: my %curr_group = &get_coursegroups($cdom,$cnum,$group,$from_namespace);
8396: if (my $tmp = &error(%curr_group)) {
8397: &Apache::lonnet::logthis('Error retrieving group: '.$tmp.' in '.$cnum.':'.$cdom);
8398: return ('read error',$tmp);
8399: } else {
8400: my %savedsettings = %curr_group;
8401: my $result = &put($to_namespace,\%savedsettings,$cdom,$cnum);
8402: my $deloutcome;
8403: if ($result eq 'ok') {
8404: $deloutcome = &del($from_namespace,[$group],$cdom,$cnum);
8405: } else {
8406: return ('write error',$result);
8407: }
8408: if ($deloutcome eq 'ok') {
8409: return 'ok';
8410: } else {
8411: return ('delete error',$deloutcome);
8412: }
8413: }
8414: }
8415:
8416: sub modify_group_roles {
8417: my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
8418: my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
8419: my $role = 'gr/'.&escape($userprivs);
8420: my ($uname,$udom) = split(/:/,$user);
8421: my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
8422: if ($result eq 'ok') {
8423: &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
8424: }
8425: return $result;
8426: }
8427:
8428: sub modify_coursegroup_membership {
8429: my ($cdom,$cnum,$membership) = @_;
8430: my $result = &put('groupmembership',$membership,$cdom,$cnum);
8431: return $result;
8432: }
8433:
8434: sub get_active_groups {
8435: my ($udom,$uname,$cdom,$cnum) = @_;
8436: my $now = time;
8437: my %groups = ();
8438: foreach my $key (keys(%env)) {
8439: if ($key =~ m-user\.role\.gr\./($match_domain)/($match_courseid)/(\w+)$-) {
8440: my ($start,$end) = split(/\./,$env{$key});
8441: if (($end!=0) && ($end<$now)) { next; }
8442: if (($start!=0) && ($start>$now)) { next; }
8443: if ($1 eq $cdom && $2 eq $cnum) {
8444: $groups{$3} = $env{$key} ;
8445: }
8446: }
8447: }
8448: return %groups;
8449: }
8450:
8451: sub get_group_membership {
8452: my ($cdom,$cnum,$group) = @_;
8453: return(&dump('groupmembership',$cdom,$cnum,$group));
8454: }
8455:
8456: sub get_users_groups {
8457: my ($udom,$uname,$courseid) = @_;
8458: my @usersgroups;
8459: my $cachetime=1800;
8460:
8461: my $hashid="$udom:$uname:$courseid";
8462: my ($grouplist,$cached)=&is_cached_new('getgroups',$hashid);
8463: if (defined($cached)) {
8464: @usersgroups = split(/:/,$grouplist);
8465: } else {
8466: $grouplist = '';
8467: my $courseurl = &courseid_to_courseurl($courseid);
8468: my %roleshash = &dump('roles',$udom,$uname,$courseurl);
8469: my $access_end = $env{'course.'.$courseid.
8470: '.default_enrollment_end_date'};
8471: my $now = time;
8472: foreach my $key (keys(%roleshash)) {
8473: if ($key =~ /^\Q$courseurl\E\/(\w+)\_gr$/) {
8474: my $group = $1;
8475: if ($roleshash{$key} =~ /_(\d+)_(\d+)$/) {
8476: my $start = $2;
8477: my $end = $1;
8478: if ($start == -1) { next; } # deleted from group
8479: if (($start!=0) && ($start>$now)) { next; }
8480: if (($end!=0) && ($end<$now)) {
8481: if ($access_end && $access_end < $now) {
8482: if ($access_end - $end < 86400) {
8483: push(@usersgroups,$group);
8484: }
8485: }
8486: next;
8487: }
8488: push(@usersgroups,$group);
8489: }
8490: }
8491: }
8492: @usersgroups = &sort_course_groups($courseid,@usersgroups);
8493: $grouplist = join(':',@usersgroups);
8494: &do_cache_new('getgroups',$hashid,$grouplist,$cachetime);
8495: }
8496: return @usersgroups;
8497: }
8498:
8499: sub devalidate_getgroups_cache {
8500: my ($udom,$uname,$cdom,$cnum)=@_;
8501: my $courseid = $cdom.'_'.$cnum;
8502:
8503: my $hashid="$udom:$uname:$courseid";
8504: &devalidate_cache_new('getgroups',$hashid);
8505: }
8506:
8507: # ------------------------------------------------------------------ Plain Text
8508:
8509: sub plaintext {
8510: my ($short,$type,$cid,$forcedefault) = @_;
8511: if ($short =~ m{^cr/}) {
8512: return (split('/',$short))[-1];
8513: }
8514: if (!defined($cid)) {
8515: $cid = $env{'request.course.id'};
8516: }
8517: my %rolenames = (
8518: Course => 'std',
8519: Community => 'alt1',
8520: Placement => 'std',
8521: );
8522: if ($cid ne '') {
8523: if ($env{'course.'.$cid.'.'.$short.'.plaintext'} ne '') {
8524: unless ($forcedefault) {
8525: my $roletext = $env{'course.'.$cid.'.'.$short.'.plaintext'};
8526: &Apache::lonlocal::mt_escape(\$roletext);
8527: return &Apache::lonlocal::mt($roletext);
8528: }
8529: }
8530: }
8531: if ((defined($type)) && (defined($rolenames{$type})) &&
8532: (defined($rolenames{$type})) &&
8533: (defined($prp{$short}{$rolenames{$type}}))) {
8534: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$type}});
8535: } elsif ($cid ne '') {
8536: my $crstype = $env{'course.'.$cid.'.type'};
8537: if (($crstype ne '') && (defined($rolenames{$crstype})) &&
8538: (defined($prp{$short}{$rolenames{$crstype}}))) {
8539: return &Apache::lonlocal::mt($prp{$short}{$rolenames{$crstype}});
8540: }
8541: }
8542: return &Apache::lonlocal::mt($prp{$short}{'std'});
8543: }
8544:
8545: # ----------------------------------------------------------------- Assign Role
8546:
8547: sub assignrole {
8548: my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
8549: $context)=@_;
8550: my $mrole;
8551: if ($role =~ /^cr\//) {
8552: my $cwosec=$url;
8553: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
8554: unless (&allowed('ccr',$cwosec)) {
8555: my $refused = 1;
8556: if ($context eq 'requestcourses') {
8557: if (($env{'user.name'} ne '') && ($env{'user.domain'} ne '')) {
8558: if ($role =~ m{^cr/($match_domain)/($match_username)/([^/]+)$}) {
8559: if (($1 eq $env{'user.domain'}) && ($2 eq $env{'user.name'})) {
8560: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
8561: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8562: if ($crsenv{'internal.courseowner'} eq
8563: $env{'user.name'}.':'.$env{'user.domain'}) {
8564: $refused = '';
8565: }
8566: }
8567: }
8568: }
8569: }
8570: if ($refused) {
8571: &logthis('Refused custom assignrole: '.
8572: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.
8573: ' by '.$env{'user.name'}.' at '.$env{'user.domain'});
8574: return 'refused';
8575: }
8576: }
8577: $mrole='cr';
8578: } elsif ($role =~ /^gr\//) {
8579: my $cwogrp=$url;
8580: $cwogrp=~s{^/($match_domain)/($match_courseid)/.*}{$1/$2};
8581: unless (&allowed('mdg',$cwogrp)) {
8582: &logthis('Refused group assignrole: '.
8583: $udom.' '.$uname.' '.$url.' '.$role.' '.$end.' '.$start.' by '.
8584: $env{'user.name'}.' at '.$env{'user.domain'});
8585: return 'refused';
8586: }
8587: $mrole='gr';
8588: } else {
8589: my $cwosec=$url;
8590: $cwosec=~s/^\/($match_domain)\/($match_courseid)\/.*/$1\/$2/;
8591: if (!(&allowed('c'.$role,$cwosec)) && !(&allowed('c'.$role,$udom))) {
8592: my $refused;
8593: if (($env{'request.course.sec'} ne '') && ($role eq 'st')) {
8594: if (!(&allowed('c'.$role,$url))) {
8595: $refused = 1;
8596: }
8597: } else {
8598: $refused = 1;
8599: }
8600: if ($refused) {
8601: my ($cdom,$cnum) = ($cwosec =~ m{^/?($match_domain)/($match_courseid)$});
8602: if (!$selfenroll && $context eq 'course') {
8603: my %crsenv;
8604: if ($role eq 'cc' || $role eq 'co') {
8605: %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8606: if (($role eq 'cc') && ($cnum !~ /^$match_community$/)) {
8607: if ($env{'request.role'} eq 'cc./'.$cdom.'/'.$cnum) {
8608: if ($crsenv{'internal.courseowner'} eq
8609: $env{'user.name'}.':'.$env{'user.domain'}) {
8610: $refused = '';
8611: }
8612: }
8613: } elsif (($role eq 'co') && ($cnum =~ /^$match_community$/)) {
8614: if ($env{'request.role'} eq 'co./'.$cdom.'/'.$cnum) {
8615: if ($crsenv{'internal.courseowner'} eq
8616: $env{'user.name'}.':'.$env{'user.domain'}) {
8617: $refused = '';
8618: }
8619: }
8620: }
8621: }
8622: } elsif (($selfenroll == 1) && ($role eq 'st') && ($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'})) {
8623: $refused = '';
8624: } elsif ($context eq 'requestcourses') {
8625: my @possroles = ('st','ta','ep','in','cc','co');
8626: if ((grep(/^\Q$role\E$/,@possroles)) && ($env{'user.name'} ne '' && $env{'user.domain'} ne '')) {
8627: my $wrongcc;
8628: if ($cnum =~ /^$match_community$/) {
8629: $wrongcc = 1 if ($role eq 'cc');
8630: } else {
8631: $wrongcc = 1 if ($role eq 'co');
8632: }
8633: unless ($wrongcc) {
8634: my %crsenv = &userenvironment($cdom,$cnum,('internal.courseowner'));
8635: if ($crsenv{'internal.courseowner'} eq
8636: $env{'user.name'}.':'.$env{'user.domain'}) {
8637: $refused = '';
8638: }
8639: }
8640: }
8641: } elsif ($context eq 'requestauthor') {
8642: if (($udom eq $env{'user.domain'}) && ($uname eq $env{'user.name'}) &&
8643: ($url eq '/'.$udom.'/') && ($role eq 'au')) {
8644: if ($env{'environment.requestauthor'} eq 'automatic') {
8645: $refused = '';
8646: } else {
8647: my %domdefaults = &get_domain_defaults($udom);
8648: if (ref($domdefaults{'requestauthor'}) eq 'HASH') {
8649: my $checkbystatus;
8650: if ($env{'user.adv'}) {
8651: my $disposition = $domdefaults{'requestauthor'}{'_LC_adv'};
8652: if ($disposition eq 'automatic') {
8653: $refused = '';
8654: } elsif ($disposition eq '') {
8655: $checkbystatus = 1;
8656: }
8657: } else {
8658: $checkbystatus = 1;
8659: }
8660: if ($checkbystatus) {
8661: if ($env{'environment.inststatus'}) {
8662: my @inststatuses = split(/,/,$env{'environment.inststatus'});
8663: foreach my $type (@inststatuses) {
8664: if (($type ne '') &&
8665: ($domdefaults{'requestauthor'}{$type} eq 'automatic')) {
8666: $refused = '';
8667: }
8668: }
8669: } elsif ($domdefaults{'requestauthor'}{'default'} eq 'automatic') {
8670: $refused = '';
8671: }
8672: }
8673: }
8674: }
8675: }
8676: }
8677: if ($refused) {
8678: &logthis('Refused assignrole: '.$udom.' '.$uname.' '.$url.
8679: ' '.$role.' '.$end.' '.$start.' by '.
8680: $env{'user.name'}.' at '.$env{'user.domain'});
8681: return 'refused';
8682: }
8683: }
8684: } elsif ($role eq 'au') {
8685: if ($url ne '/'.$udom.'/') {
8686: &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
8687: ' to assign author role for '.$uname.':'.$udom.
8688: ' in domain: '.$url.' refused (wrong domain).');
8689: return 'refused';
8690: }
8691: }
8692: $mrole=$role;
8693: }
8694: my $command="encrypt:rolesput:$env{'user.domain'}:$env{'user.name'}:".
8695: "$udom:$uname:$url".'_'."$mrole=$role";
8696: if ($end) { $command.='_'.$end; }
8697: if ($start) {
8698: if ($end) {
8699: $command.='_'.$start;
8700: } else {
8701: $command.='_0_'.$start;
8702: }
8703: }
8704: my $origstart = $start;
8705: my $origend = $end;
8706: my $delflag;
8707: # actually delete
8708: if ($deleteflag) {
8709: if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
8710: # modify command to delete the role
8711: $command="encrypt:rolesdel:$env{'user.domain'}:$env{'user.name'}:".
8712: "$udom:$uname:$url".'_'."$mrole";
8713: &logthis("$env{'user.name'} at $env{'user.domain'} deletes $mrole in $url for $uname at $udom");
8714: # set start and finish to negative values for userrolelog
8715: $start=-1;
8716: $end=-1;
8717: $delflag = 1;
8718: }
8719: }
8720: # send command
8721: my $answer=&reply($command,&homeserver($uname,$udom));
8722: # log new user role if status is ok
8723: if ($answer eq 'ok') {
8724: &userrolelog($role,$uname,$udom,$url,$start,$end);
8725: if (($role eq 'cc') || ($role eq 'in') ||
8726: ($role eq 'ep') || ($role eq 'ad') ||
8727: ($role eq 'ta') || ($role eq 'st') ||
8728: ($role=~/^cr/) || ($role eq 'gr') ||
8729: ($role eq 'co')) {
8730: # for course roles, perform group memberships changes triggered by role change.
8731: unless ($role =~ /^gr/) {
8732: &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
8733: $origstart,$selfenroll,$context);
8734: }
8735: &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8736: $selfenroll,$context);
8737: } elsif (($role eq 'li') || ($role eq 'dg') || ($role eq 'sc') ||
8738: ($role eq 'au') || ($role eq 'dc')) {
8739: &domainrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8740: $context);
8741: } elsif (($role eq 'ca') || ($role eq 'aa')) {
8742: &coauthorrolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,
8743: $context);
8744: }
8745: if ($role eq 'cc') {
8746: &autoupdate_coowners($url,$end,$start,$uname,$udom);
8747: }
8748: }
8749: return $answer;
8750: }
8751:
8752: sub autoupdate_coowners {
8753: my ($url,$end,$start,$uname,$udom) = @_;
8754: my ($cdom,$cnum) = ($url =~ m{^/($match_domain)/($match_courseid)});
8755: if (($cdom ne '') && ($cnum ne '')) {
8756: my $now = time;
8757: my %domdesign = &Apache::loncommon::get_domainconf($cdom);
8758: if ($domdesign{$cdom.'.autoassign.co-owners'}) {
8759: my %coursehash = &coursedescription($cdom.'_'.$cnum);
8760: my $instcode = $coursehash{'internal.coursecode'};
8761: if ($instcode ne '') {
8762: if (($start && $start <= $now) && ($end == 0) || ($end > $now)) {
8763: unless ($coursehash{'internal.courseowner'} eq $uname.':'.$udom) {
8764: my ($delcoowners,@newcoowners,$putresult,$delresult,$coowners);
8765: my ($result,$desc) = &auto_validate_instcode($cnum,$cdom,$instcode,$uname.':'.$udom);
8766: if ($result eq 'valid') {
8767: if ($coursehash{'internal.co-owners'}) {
8768: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
8769: push(@newcoowners,$coowner);
8770: }
8771: unless (grep(/^\Q$uname\E:\Q$udom\E$/,@newcoowners)) {
8772: push(@newcoowners,$uname.':'.$udom);
8773: }
8774: @newcoowners = sort(@newcoowners);
8775: } else {
8776: push(@newcoowners,$uname.':'.$udom);
8777: }
8778: } else {
8779: if ($coursehash{'internal.co-owners'}) {
8780: foreach my $coowner (split(',',$coursehash{'internal.co-owners'})) {
8781: unless ($coowner eq $uname.':'.$udom) {
8782: push(@newcoowners,$coowner);
8783: }
8784: }
8785: unless (@newcoowners > 0) {
8786: $delcoowners = 1;
8787: $coowners = '';
8788: }
8789: }
8790: }
8791: if (@newcoowners || $delcoowners) {
8792: &store_coowners($cdom,$cnum,$coursehash{'home'},
8793: $delcoowners,@newcoowners);
8794: }
8795: }
8796: }
8797: }
8798: }
8799: }
8800: }
8801:
8802: sub store_coowners {
8803: my ($cdom,$cnum,$chome,$delcoowners,@newcoowners) = @_;
8804: my $cid = $cdom.'_'.$cnum;
8805: my ($coowners,$delresult,$putresult);
8806: if (@newcoowners) {
8807: $coowners = join(',',@newcoowners);
8808: my %coownershash = (
8809: 'internal.co-owners' => $coowners,
8810: );
8811: $putresult = &put('environment',\%coownershash,$cdom,$cnum);
8812: if ($putresult eq 'ok') {
8813: if ($env{'course.'.$cid.'.num'} eq $cnum) {
8814: &appenv({'course.'.$cid.'.internal.co-owners' => $coowners});
8815: }
8816: }
8817: }
8818: if ($delcoowners) {
8819: $delresult = &Apache::lonnet::del('environment',['internal.co-owners'],$cdom,$cnum);
8820: if ($delresult eq 'ok') {
8821: if ($env{'course.'.$cid.'.internal.co-owners'}) {
8822: &Apache::lonnet::delenv('course.'.$cid.'.internal.co-owners');
8823: }
8824: }
8825: }
8826: if (($putresult eq 'ok') || ($delresult eq 'ok')) {
8827: my %crsinfo =
8828: &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
8829: if (ref($crsinfo{$cid}) eq 'HASH') {
8830: $crsinfo{$cid}{'co-owners'} = \@newcoowners;
8831: my $cidput = &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
8832: }
8833: }
8834: }
8835:
8836: # -------------------------------------------------- Modify user authentication
8837: # Overrides without validation
8838:
8839: sub modifyuserauth {
8840: my ($udom,$uname,$umode,$upass)=@_;
8841: my $uhome=&homeserver($uname,$udom);
8842: unless (&allowed('mau',$udom)) { return 'refused'; }
8843: &logthis('Call to modify user authentication '.$udom.', '.$uname.', '.
8844: $umode.' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8845: ' in domain '.$env{'request.role.domain'});
8846: my $reply=&reply('encrypt:changeuserauth:'.$udom.':'.$uname.':'.$umode.':'.
8847: &escape($upass),$uhome);
8848: &log($env{'user.domain'},$env{'user.name'},$env{'user.home'},
8849: 'Authentication changed for '.$udom.', '.$uname.', '.$umode.
8850: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8851: &log($udom,,$uname,$uhome,
8852: 'Authentication changed by '.$env{'user.domain'}.', '.
8853: $env{'user.name'}.', '.$umode.
8854: '(Remote '.$ENV{'REMOTE_ADDR'}.'): '.$reply);
8855: unless ($reply eq 'ok') {
8856: &logthis('Authentication mode error: '.$reply);
8857: return 'error: '.$reply;
8858: }
8859: return 'ok';
8860: }
8861:
8862: # --------------------------------------------------------------- Modify a user
8863:
8864: sub modifyuser {
8865: my ($udom, $uname, $uid,
8866: $umode, $upass, $first,
8867: $middle, $last, $gene,
8868: $forceid, $desiredhome, $email, $inststatus, $candelete)=@_;
8869: $udom= &LONCAPA::clean_domain($udom);
8870: $uname=&LONCAPA::clean_username($uname);
8871: my $showcandelete = 'none';
8872: if (ref($candelete) eq 'ARRAY') {
8873: if (@{$candelete} > 0) {
8874: $showcandelete = join(', ',@{$candelete});
8875: }
8876: }
8877: &logthis('Call to modify user '.$udom.', '.$uname.', '.$uid.', '.
8878: $umode.', '.$first.', '.$middle.', '.
8879: $last.', '.$gene.'(forceid: '.$forceid.'; candelete: '.$showcandelete.')'.
8880: (defined($desiredhome) ? ' desiredhome = '.$desiredhome :
8881: ' desiredhome not specified').
8882: ' by '.$env{'user.name'}.' at '.$env{'user.domain'}.
8883: ' in domain '.$env{'request.role.domain'});
8884: my $uhome=&homeserver($uname,$udom,'true');
8885: my $newuser;
8886: if ($uhome eq 'no_host') {
8887: $newuser = 1;
8888: }
8889: # ----------------------------------------------------------------- Create User
8890: if (($uhome eq 'no_host') &&
8891: (($umode && $upass) || ($umode eq 'localauth'))) {
8892: my $unhome='';
8893: if (defined($desiredhome) && &host_domain($desiredhome) eq $udom) {
8894: $unhome = $desiredhome;
8895: } elsif($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom) {
8896: $unhome=$env{'course.'.$env{'request.course.id'}.'.home'};
8897: } else { # load balancing routine for determining $unhome
8898: my $loadm=10000000;
8899: my %servers = &get_servers($udom,'library');
8900: foreach my $tryserver (keys(%servers)) {
8901: my $answer=reply('load',$tryserver);
8902: if (($answer=~/\d+/) && ($answer<$loadm)) {
8903: $loadm=$answer;
8904: $unhome=$tryserver;
8905: }
8906: }
8907: }
8908: if (($unhome eq '') || ($unhome eq 'no_host')) {
8909: return 'error: unable to find a home server for '.$uname.
8910: ' in domain '.$udom;
8911: }
8912: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':'.$umode.':'.
8913: &escape($upass),$unhome);
8914: unless ($reply eq 'ok') {
8915: return 'error: '.$reply;
8916: }
8917: $uhome=&homeserver($uname,$udom,'true');
8918: if (($uhome eq '') || ($uhome eq 'no_host') || ($uhome ne $unhome)) {
8919: return 'error: unable verify users home machine.';
8920: }
8921: } # End of creation of new user
8922: # ---------------------------------------------------------------------- Add ID
8923: if ($uid) {
8924: $uid=~tr/A-Z/a-z/;
8925: my %uidhash=&idrget($udom,$uname);
8926: if (($uidhash{$uname}) && ($uidhash{$uname}!~/error\:/)
8927: && (!$forceid)) {
8928: unless ($uid eq $uidhash{$uname}) {
8929: return 'error: user id "'.$uid.'" does not match '.
8930: 'current user id "'.$uidhash{$uname}.'".';
8931: }
8932: } else {
8933: &idput($udom,{$uname => $uid},$uhome,'ids');
8934: }
8935: }
8936: # -------------------------------------------------------------- Add names, etc
8937: my @tmp=&get('environment',
8938: ['firstname','middlename','lastname','generation','id',
8939: 'permanentemail','inststatus'],
8940: $udom,$uname);
8941: my (%names,%oldnames);
8942: if ($tmp[0] =~ m/^error:.*/) {
8943: %names=();
8944: } else {
8945: %names = @tmp;
8946: %oldnames = %names;
8947: }
8948: #
8949: # If name, email and/or uid are blank (e.g., because an uploaded file
8950: # of users did not contain them), do not overwrite existing values
8951: # unless field is in $candelete array ref.
8952: #
8953:
8954: my @fields = ('firstname','middlename','lastname','generation',
8955: 'permanentemail','id');
8956: my %newvalues;
8957: if (ref($candelete) eq 'ARRAY') {
8958: foreach my $field (@fields) {
8959: if (grep(/^\Q$field\E$/,@{$candelete})) {
8960: if ($field eq 'firstname') {
8961: $names{$field} = $first;
8962: } elsif ($field eq 'middlename') {
8963: $names{$field} = $middle;
8964: } elsif ($field eq 'lastname') {
8965: $names{$field} = $last;
8966: } elsif ($field eq 'generation') {
8967: $names{$field} = $gene;
8968: } elsif ($field eq 'permanentemail') {
8969: $names{$field} = $email;
8970: } elsif ($field eq 'id') {
8971: $names{$field} = $uid;
8972: }
8973: }
8974: }
8975: }
8976: if ($first) { $names{'firstname'} = $first; }
8977: if (defined($middle)) { $names{'middlename'} = $middle; }
8978: if ($last) { $names{'lastname'} = $last; }
8979: if (defined($gene)) { $names{'generation'} = $gene; }
8980: if ($email) {
8981: $email=~s/[^\w\@\.\-\,]//gs;
8982: if ($email=~/\@/) { $names{'permanentemail'} = $email; }
8983: }
8984: if ($uid) { $names{'id'} = $uid; }
8985: if (defined($inststatus)) {
8986: $names{'inststatus'} = '';
8987: my ($usertypes,$typesorder) = &retrieve_inst_usertypes($udom);
8988: if (ref($usertypes) eq 'HASH') {
8989: my @okstatuses;
8990: foreach my $item (split(/:/,$inststatus)) {
8991: if (defined($usertypes->{$item})) {
8992: push(@okstatuses,$item);
8993: }
8994: }
8995: if (@okstatuses) {
8996: $names{'inststatus'} = join(':', map { &escape($_); } @okstatuses);
8997: }
8998: }
8999: }
9000: my $logmsg = $udom.', '.$uname.', '.$uid.', '.
9001: $umode.', '.$first.', '.$middle.', '.
9002: $last.', '.$gene.', '.$email.', '.$inststatus;
9003: if ($env{'user.name'} ne '' && $env{'user.domain'}) {
9004: $logmsg .= ' by '.$env{'user.name'}.' at '.$env{'user.domain'};
9005: } else {
9006: $logmsg .= ' during self creation';
9007: }
9008: my $changed;
9009: if ($newuser) {
9010: $changed = 1;
9011: } else {
9012: foreach my $field (@fields) {
9013: if ($names{$field} ne $oldnames{$field}) {
9014: $changed = 1;
9015: last;
9016: }
9017: }
9018: }
9019: unless ($changed) {
9020: $logmsg = 'No changes in user information needed for: '.$logmsg;
9021: &logthis($logmsg);
9022: return 'ok';
9023: }
9024: my $reply = &put('environment', \%names, $udom,$uname);
9025: if ($reply ne 'ok') {
9026: return 'error: '.$reply;
9027: }
9028: if ($names{'permanentemail'} ne $oldnames{'permanentemail'}) {
9029: &Apache::lonnet::devalidate_cache_new('emailscache',$uname.':'.$udom);
9030: }
9031: my $sqlresult = &update_allusers_table($uname,$udom,\%names);
9032: &devalidate_cache_new('namescache',$uname.':'.$udom);
9033: $logmsg = 'Success modifying user '.$logmsg;
9034: &logthis($logmsg);
9035: return 'ok';
9036: }
9037:
9038: # -------------------------------------------------------------- Modify student
9039:
9040: sub modifystudent {
9041: my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
9042: $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
9043: $selfenroll,$context,$inststatus,$credits)=@_;
9044: if (!$cid) {
9045: unless ($cid=$env{'request.course.id'}) {
9046: return 'not_in_class';
9047: }
9048: }
9049: # --------------------------------------------------------------- Make the user
9050: my $reply=&modifyuser
9051: ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$forceid,
9052: $desiredhome,$email,$inststatus);
9053: unless ($reply eq 'ok') { return $reply; }
9054: # This will cause &modify_student_enrollment to get the uid from the
9055: # student's environment
9056: $uid = undef if (!$forceid);
9057: $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
9058: $gene,$usec,$end,$start,$type,$locktype,
9059: $cid,$selfenroll,$context,$credits);
9060: return $reply;
9061: }
9062:
9063: sub modify_student_enrollment {
9064: my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,
9065: $locktype,$cid,$selfenroll,$context,$credits) = @_;
9066: my ($cdom,$cnum,$chome);
9067: if (!$cid) {
9068: unless ($cid=$env{'request.course.id'}) {
9069: return 'not_in_class';
9070: }
9071: $cdom=$env{'course.'.$cid.'.domain'};
9072: $cnum=$env{'course.'.$cid.'.num'};
9073: } else {
9074: ($cdom,$cnum)=split(/_/,$cid);
9075: }
9076: $chome=$env{'course.'.$cid.'.home'};
9077: if (!$chome) {
9078: $chome=&homeserver($cnum,$cdom);
9079: }
9080: if (!$chome) { return 'unknown_course'; }
9081: # Make sure the user exists
9082: my $uhome=&homeserver($uname,$udom);
9083: if (($uhome eq '') || ($uhome eq 'no_host')) {
9084: return 'error: no such user';
9085: }
9086: # Get student data if we were not given enough information
9087: if (!defined($first) || $first eq '' ||
9088: !defined($last) || $last eq '' ||
9089: !defined($uid) || $uid eq '' ||
9090: !defined($middle) || $middle eq '' ||
9091: !defined($gene) || $gene eq '') {
9092: # They did not supply us with enough data to enroll the student, so
9093: # we need to pick up more information.
9094: my %tmp = &get('environment',
9095: ['firstname','middlename','lastname', 'generation','id']
9096: ,$udom,$uname);
9097:
9098: #foreach my $key (keys(%tmp)) {
9099: # &logthis("key $key = ".$tmp{$key});
9100: #}
9101: $first = $tmp{'firstname'} if (!defined($first) || $first eq '');
9102: $middle = $tmp{'middlename'} if (!defined($middle) || $middle eq '');
9103: $last = $tmp{'lastname'} if (!defined($last) || $last eq '');
9104: $gene = $tmp{'generation'} if (!defined($gene) || $gene eq '');
9105: $uid = $tmp{'id'} if (!defined($uid) || $uid eq '');
9106: }
9107: my $fullname = &format_name($first,$middle,$last,$gene,'lastname');
9108: my $user = "$uname:$udom";
9109: my %old_entry = &Apache::lonnet::get('classlist',[$user],$cdom,$cnum);
9110: my $reply=cput('classlist',
9111: {$user =>
9112: join(':',$end,$start,$uid,$usec,$fullname,$type,$locktype,$credits) },
9113: $cdom,$cnum);
9114: if (($reply eq 'ok') || ($reply eq 'delayed')) {
9115: &devalidate_getsection_cache($udom,$uname,$cid);
9116: } else {
9117: return 'error: '.$reply;
9118: }
9119: # Add student role to user
9120: my $uurl='/'.$cid;
9121: $uurl=~s/\_/\//g;
9122: if ($usec) {
9123: $uurl.='/'.$usec;
9124: }
9125: my $result = &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,
9126: $selfenroll,$context);
9127: if ($result ne 'ok') {
9128: if ($old_entry{$user} ne '') {
9129: $reply = &cput('classlist',\%old_entry,$cdom,$cnum);
9130: } else {
9131: $reply = &del('classlist',[$user],$cdom,$cnum);
9132: }
9133: }
9134: return $result;
9135: }
9136:
9137: sub format_name {
9138: my ($firstname,$middlename,$lastname,$generation,$first)=@_;
9139: my $name;
9140: if ($first ne 'lastname') {
9141: $name=$firstname.' '.$middlename.' '.$lastname.' '.$generation;
9142: } else {
9143: if ($lastname=~/\S/) {
9144: $name.= $lastname.' '.$generation.', '.$firstname.' '.$middlename;
9145: $name=~s/\s+,/,/;
9146: } else {
9147: $name.= $firstname.' '.$middlename.' '.$generation;
9148: }
9149: }
9150: $name=~s/^\s+//;
9151: $name=~s/\s+$//;
9152: $name=~s/\s+/ /g;
9153: return $name;
9154: }
9155:
9156: # ------------------------------------------------- Write to course preferences
9157:
9158: sub writecoursepref {
9159: my ($courseid,%prefs)=@_;
9160: $courseid=~s/^\///;
9161: $courseid=~s/\_/\//g;
9162: my ($cdomain,$cnum)=split(/\//,$courseid);
9163: my $chome=homeserver($cnum,$cdomain);
9164: if (($chome eq '') || ($chome eq 'no_host')) {
9165: return 'error: no such course';
9166: }
9167: my $cstring='';
9168: foreach my $pref (keys(%prefs)) {
9169: $cstring.=&escape($pref).'='.&escape($prefs{$pref}).'&';
9170: }
9171: $cstring=~s/\&$//;
9172: return reply('put:'.$cdomain.':'.$cnum.':environment:'.$cstring,$chome);
9173: }
9174:
9175: # ---------------------------------------------------------- Make/modify course
9176:
9177: sub createcourse {
9178: my ($udom,$description,$url,$course_server,$nonstandard,$inst_code,
9179: $course_owner,$crstype,$cnum,$context,$category)=@_;
9180: $url=&declutter($url);
9181: my $cid='';
9182: if ($context eq 'requestcourses') {
9183: my $can_create = 0;
9184: my ($ownername,$ownerdom) = split(':',$course_owner);
9185: if ($udom eq $ownerdom) {
9186: if (&usertools_access($ownername,$ownerdom,$category,undef,
9187: $context)) {
9188: $can_create = 1;
9189: }
9190: } else {
9191: my %userenv = &userenvironment($ownerdom,$ownername,'reqcrsotherdom.'.
9192: $category);
9193: if ($userenv{'reqcrsotherdom.'.$category} ne '') {
9194: my @curr = split(',',$userenv{'reqcrsotherdom.'.$category});
9195: if (@curr > 0) {
9196: my @options = qw(approval validate autolimit);
9197: my $optregex = join('|',@options);
9198: if (grep(/^\Q$udom\E:($optregex)(=?\d*)$/,@curr)) {
9199: $can_create = 1;
9200: }
9201: }
9202: }
9203: }
9204: if ($can_create) {
9205: unless ($ownername eq $env{'user.name'} && $ownerdom eq $env{'user.domain'}) {
9206: unless (&allowed('ccc',$udom)) {
9207: return 'refused';
9208: }
9209: }
9210: } else {
9211: return 'refused';
9212: }
9213: } elsif (!&allowed('ccc',$udom)) {
9214: return 'refused';
9215: }
9216: # --------------------------------------------------------------- Get Unique ID
9217: my $uname;
9218: if ($cnum =~ /^$match_courseid$/) {
9219: my $chome=&homeserver($cnum,$udom,'true');
9220: if (($chome eq '') || ($chome eq 'no_host')) {
9221: $uname = $cnum;
9222: } else {
9223: $uname = &generate_coursenum($udom,$crstype);
9224: }
9225: } else {
9226: $uname = &generate_coursenum($udom,$crstype);
9227: }
9228: return $uname if ($uname =~ /^error/);
9229: # -------------------------------------------------- Check supplied server name
9230: if (!defined($course_server)) {
9231: if (defined(&domain($udom,'primary'))) {
9232: $course_server = &domain($udom,'primary');
9233: } else {
9234: $course_server = $env{'user.home'};
9235: }
9236: }
9237: my %host_servers =
9238: &Apache::lonnet::get_servers($udom,'library');
9239: unless ($host_servers{$course_server}) {
9240: return 'error: invalid home server for course: '.$course_server;
9241: }
9242: # ------------------------------------------------------------- Make the course
9243: my $reply=&reply('encrypt:makeuser:'.$udom.':'.$uname.':none::',
9244: $course_server);
9245: unless ($reply eq 'ok') { return 'error: '.$reply; }
9246: my $uhome=&homeserver($uname,$udom,'true');
9247: if (($uhome eq '') || ($uhome eq 'no_host')) {
9248: return 'error: no such course';
9249: }
9250: # ----------------------------------------------------------------- Course made
9251: # log existence
9252: my $now = time;
9253: my $newcourse = {
9254: $udom.'_'.$uname => {
9255: description => $description,
9256: inst_code => $inst_code,
9257: owner => $course_owner,
9258: type => $crstype,
9259: creator => $env{'user.name'}.':'.
9260: $env{'user.domain'},
9261: created => $now,
9262: context => $context,
9263: },
9264: };
9265: &courseidput($udom,$newcourse,$uhome,'notime');
9266: # set toplevel url
9267: my $topurl=$url;
9268: unless ($nonstandard) {
9269: # ------------------------------------------ For standard courses, make top url
9270: my $mapurl=&clutter($url);
9271: if ($mapurl eq '/res/') { $mapurl=''; }
9272: $env{'form.initmap'}=(<<ENDINITMAP);
9273: <map>
9274: <resource id="1" type="start"></resource>
9275: <resource id="2" src="$mapurl"></resource>
9276: <resource id="3" type="finish"></resource>
9277: <link index="1" from="1" to="2"></link>
9278: <link index="2" from="2" to="3"></link>
9279: </map>
9280: ENDINITMAP
9281: $topurl=&declutter(
9282: &finishuserfileupload($uname,$udom,'initmap','default.sequence')
9283: );
9284: }
9285: # ----------------------------------------------------------- Write preferences
9286: &writecoursepref($udom.'_'.$uname,
9287: ('description' => $description,
9288: 'url' => $topurl,
9289: 'internal.creator' => $env{'user.name'}.':'.
9290: $env{'user.domain'},
9291: 'internal.created' => $now,
9292: 'internal.creationcontext' => $context)
9293: );
9294: return '/'.$udom.'/'.$uname;
9295: }
9296:
9297: # ------------------------------------------------------------------- Create ID
9298: sub generate_coursenum {
9299: my ($udom,$crstype) = @_;
9300: my $domdesc = &domain($udom);
9301: return 'error: invalid domain' if ($domdesc eq '');
9302: my $first;
9303: if ($crstype eq 'Community') {
9304: $first = '0';
9305: } else {
9306: $first = int(1+rand(9));
9307: }
9308: my $uname=$first.
9309: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
9310: substr($$.time,0,5).unpack("H8",pack("I32",time)).
9311: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
9312: # ----------------------------------------------- Make sure that does not exist
9313: my $uhome=&homeserver($uname,$udom,'true');
9314: unless (($uhome eq '') || ($uhome eq 'no_host')) {
9315: if ($crstype eq 'Community') {
9316: $first = '0';
9317: } else {
9318: $first = int(1+rand(9));
9319: }
9320: $uname=$first.
9321: ('a'..'z','A'..'Z','0'..'9')[int(rand(62))].
9322: substr($$.time,0,5).unpack("H8",pack("I32",time)).
9323: unpack("H2",pack("I32",int(rand(255)))).$perlvar{'lonHostID'};
9324: $uhome=&homeserver($uname,$udom,'true');
9325: unless (($uhome eq '') || ($uhome eq 'no_host')) {
9326: return 'error: unable to generate unique course-ID';
9327: }
9328: }
9329: return $uname;
9330: }
9331:
9332: sub is_course {
9333: my ($cdom, $cnum) = scalar(@_) == 1 ?
9334: ($_[0] =~ /^($match_domain)_($match_courseid)$/) : @_;
9335:
9336: return unless $cdom and $cnum;
9337:
9338: my %courses = &courseiddump($cdom, '.', 1, '.', '.', $cnum, undef, undef,
9339: '.');
9340:
9341: return unless(exists($courses{$cdom.'_'.$cnum}));
9342: return wantarray ? ($cdom, $cnum) : $cdom.'_'.$cnum;
9343: }
9344:
9345: sub store_userdata {
9346: my ($storehash,$datakey,$namespace,$udom,$uname) = @_;
9347: my $result;
9348: if ($datakey ne '') {
9349: if (ref($storehash) eq 'HASH') {
9350: if ($udom eq '' || $uname eq '') {
9351: $udom = $env{'user.domain'};
9352: $uname = $env{'user.name'};
9353: }
9354: my $uhome=&homeserver($uname,$udom);
9355: if (($uhome eq '') || ($uhome eq 'no_host')) {
9356: $result = 'error: no_host';
9357: } else {
9358: $storehash->{'ip'} = $ENV{'REMOTE_ADDR'};
9359: $storehash->{'host'} = $perlvar{'lonHostID'};
9360:
9361: my $namevalue='';
9362: foreach my $key (keys(%{$storehash})) {
9363: $namevalue.=&escape($key).'='.&freeze_escape($$storehash{$key}).'&';
9364: }
9365: $namevalue=~s/\&$//;
9366: unless ($namespace eq 'courserequests') {
9367: $datakey = &escape($datakey);
9368: }
9369: $result = &reply("store:$udom:$uname:$namespace:$datakey:".
9370: $namevalue,$uhome);
9371: }
9372: } else {
9373: $result = 'error: data to store was not a hash reference';
9374: }
9375: } else {
9376: $result= 'error: invalid requestkey';
9377: }
9378: return $result;
9379: }
9380:
9381: # ---------------------------------------------------------- Assign Custom Role
9382:
9383: sub assigncustomrole {
9384: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
9385: return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
9386: $end,$start,$deleteflag,$selfenroll,$context);
9387: }
9388:
9389: # ----------------------------------------------------------------- Revoke Role
9390:
9391: sub revokerole {
9392: my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
9393: my $now=time;
9394: return &assignrole($udom,$uname,$url,$role,$now,undef,$deleteflag,$selfenroll,$context);
9395: }
9396:
9397: # ---------------------------------------------------------- Revoke Custom Role
9398:
9399: sub revokecustomrole {
9400: my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
9401: my $now=time;
9402: return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
9403: $deleteflag,$selfenroll,$context);
9404: }
9405:
9406: # ------------------------------------------------------------ Disk usage
9407: sub diskusage {
9408: my ($udom,$uname,$directorypath,$getpropath)=@_;
9409: $directorypath =~ s/\/$//;
9410: my $listing=&reply('du2:'.&escape($directorypath).':'
9411: .&escape($getpropath).':'.&escape($uname).':'
9412: .&escape($udom),homeserver($uname,$udom));
9413: if ($listing eq 'unknown_cmd') {
9414: if ($getpropath) {
9415: $directorypath = &propath($udom,$uname).'/'.$directorypath;
9416: }
9417: $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
9418: }
9419: return $listing;
9420: }
9421:
9422: sub is_locked {
9423: my ($file_name, $domain, $user, $which) = @_;
9424: my @check;
9425: my $is_locked;
9426: push (@check,$file_name);
9427: my %locked = &get('file_permissions',\@check,
9428: $env{'user.domain'},$env{'user.name'});
9429: my ($tmp)=keys(%locked);
9430: if ($tmp=~/^error:/) { undef(%locked); }
9431:
9432: if (ref($locked{$file_name}) eq 'ARRAY') {
9433: $is_locked = 'false';
9434: foreach my $entry (@{$locked{$file_name}}) {
9435: if (ref($entry) eq 'ARRAY') {
9436: $is_locked = 'true';
9437: if (ref($which) eq 'ARRAY') {
9438: push(@{$which},$entry);
9439: } else {
9440: last;
9441: }
9442: }
9443: }
9444: } else {
9445: $is_locked = 'false';
9446: }
9447: return $is_locked;
9448: }
9449:
9450: sub declutter_portfile {
9451: my ($file) = @_;
9452: $file =~ s{^(/portfolio/|portfolio/)}{/};
9453: return $file;
9454: }
9455:
9456: # ------------------------------------------------------------- Mark as Read Only
9457:
9458: sub mark_as_readonly {
9459: my ($domain,$user,$files,$what) = @_;
9460: my %current_permissions = &dump('file_permissions',$domain,$user);
9461: my ($tmp)=keys(%current_permissions);
9462: if ($tmp=~/^error:/) { undef(%current_permissions); }
9463: foreach my $file (@{$files}) {
9464: $file = &declutter_portfile($file);
9465: push(@{$current_permissions{$file}},$what);
9466: }
9467: &put('file_permissions',\%current_permissions,$domain,$user);
9468: return;
9469: }
9470:
9471: # ------------------------------------------------------------Save Selected Files
9472:
9473: sub save_selected_files {
9474: my ($user, $path, @files) = @_;
9475: my $filename = $user."savedfiles";
9476: my @other_files = &files_not_in_path($user, $path);
9477: open (OUT, '>'.$tmpdir.$filename);
9478: foreach my $file (@files) {
9479: print (OUT $env{'form.currentpath'}.$file."\n");
9480: }
9481: foreach my $file (@other_files) {
9482: print (OUT $file."\n");
9483: }
9484: close (OUT);
9485: return 'ok';
9486: }
9487:
9488: sub clear_selected_files {
9489: my ($user) = @_;
9490: my $filename = $user."savedfiles";
9491: open (OUT, '>'.LONCAPA::tempdir().$filename);
9492: print (OUT undef);
9493: close (OUT);
9494: return ("ok");
9495: }
9496:
9497: sub files_in_path {
9498: my ($user, $path) = @_;
9499: my $filename = $user."savedfiles";
9500: my %return_files;
9501: open (IN, '<'.LONCAPA::tempdir().$filename);
9502: while (my $line_in = <IN>) {
9503: chomp ($line_in);
9504: my @paths_and_file = split (m!/!, $line_in);
9505: my $file_part = pop (@paths_and_file);
9506: my $path_part = join ('/', @paths_and_file);
9507: $path_part.='/';
9508: my $path_and_file = $path_part.$file_part;
9509: if ($path_part eq $path) {
9510: $return_files{$file_part}= 'selected';
9511: }
9512: }
9513: close (IN);
9514: return (\%return_files);
9515: }
9516:
9517: # called in portfolio select mode, to show files selected NOT in current directory
9518: sub files_not_in_path {
9519: my ($user, $path) = @_;
9520: my $filename = $user."savedfiles";
9521: my @return_files;
9522: my $path_part;
9523: open(IN, '<'.LONCAPA::.$filename);
9524: while (my $line = <IN>) {
9525: #ok, I know it's clunky, but I want it to work
9526: my @paths_and_file = split(m|/|, $line);
9527: my $file_part = pop(@paths_and_file);
9528: chomp($file_part);
9529: my $path_part = join('/', @paths_and_file);
9530: $path_part .= '/';
9531: my $path_and_file = $path_part.$file_part;
9532: if ($path_part ne $path) {
9533: push(@return_files, ($path_and_file));
9534: }
9535: }
9536: close(OUT);
9537: return (@return_files);
9538: }
9539:
9540: #------------------------------Submitted/Handedback Portfolio Files Versioning
9541:
9542: sub portfiles_versioning {
9543: my ($symb,$domain,$stu_name,$portfiles,$versioned_portfiles) = @_;
9544: my $portfolio_root = '/userfiles/portfolio';
9545: return unless ((ref($portfiles) eq 'ARRAY') && (ref($versioned_portfiles) eq 'ARRAY'));
9546: foreach my $file (@{$portfiles}) {
9547: &unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
9548: my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
9549: my ($answer_name,$answer_ver,$answer_ext) = &file_name_version_ext($answer_file);
9550: my $getpropath = 1;
9551: my ($dir_list,$listerror) = &dirlist($portfolio_root.$directory,$domain,
9552: $stu_name,$getpropath);
9553: my $version = &get_next_version($answer_name,$answer_ext,$dir_list);
9554: my $new_answer =
9555: &version_selected_portfile($domain,$stu_name,$directory,$answer_file,$version);
9556: if ($new_answer ne 'problem getting file') {
9557: push(@{$versioned_portfiles}, $directory.$new_answer);
9558: &mark_as_readonly($domain,$stu_name,[$directory.$new_answer],
9559: [$symb,$env{'request.course.id'},'graded']);
9560: }
9561: }
9562: }
9563:
9564: sub get_next_version {
9565: my ($answer_name, $answer_ext, $dir_list) = @_;
9566: my $version;
9567: if (ref($dir_list) eq 'ARRAY') {
9568: foreach my $row (@{$dir_list}) {
9569: my ($file) = split(/\&/,$row,2);
9570: my ($file_name,$file_version,$file_ext) =
9571: &file_name_version_ext($file);
9572: if (($file_name eq $answer_name) &&
9573: ($file_ext eq $answer_ext)) {
9574: # gets here if filename and extension match,
9575: # regardless of version
9576: if ($file_version ne '') {
9577: # a versioned file is found so save it for later
9578: if ($file_version > $version) {
9579: $version = $file_version;
9580: }
9581: }
9582: }
9583: }
9584: }
9585: $version ++;
9586: return($version);
9587: }
9588:
9589: sub version_selected_portfile {
9590: my ($domain,$stu_name,$directory,$file_name,$version) = @_;
9591: my ($answer_name,$answer_ver,$answer_ext) =
9592: &file_name_version_ext($file_name);
9593: my $new_answer;
9594: $env{'form.copy'} =
9595: &getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
9596: if($env{'form.copy'} eq '-1') {
9597: $new_answer = 'problem getting file';
9598: } else {
9599: $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
9600: my $copy_result =
9601: &finishuserfileupload($stu_name,$domain,'copy',
9602: '/portfolio'.$directory.$new_answer);
9603: }
9604: undef($env{'form.copy'});
9605: return ($new_answer);
9606: }
9607:
9608: sub file_name_version_ext {
9609: my ($file)=@_;
9610: my @file_parts = split(/\./, $file);
9611: my ($name,$version,$ext);
9612: if (@file_parts > 1) {
9613: $ext=pop(@file_parts);
9614: if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
9615: $version=pop(@file_parts);
9616: }
9617: $name=join('.',@file_parts);
9618: } else {
9619: $name=join('.',@file_parts);
9620: }
9621: return($name,$version,$ext);
9622: }
9623:
9624: #----------------------------------------------Get portfolio file permissions
9625:
9626: sub get_portfile_permissions {
9627: my ($domain,$user) = @_;
9628: my %current_permissions = &dump('file_permissions',$domain,$user);
9629: my ($tmp)=keys(%current_permissions);
9630: if ($tmp=~/^error:/) { undef(%current_permissions); }
9631: return \%current_permissions;
9632: }
9633:
9634: #---------------------------------------------Get portfolio file access controls
9635:
9636: sub get_access_controls {
9637: my ($current_permissions,$group,$file) = @_;
9638: my %access;
9639: my $real_file = $file;
9640: $file =~ s/\.meta$//;
9641: if (defined($file)) {
9642: if (ref($$current_permissions{$file."\0".'accesscontrol'}) eq 'HASH') {
9643: foreach my $control (keys(%{$$current_permissions{$file."\0".'accesscontrol'}})) {
9644: $access{$real_file}{$control} = $$current_permissions{$file."\0".$control};
9645: }
9646: }
9647: } else {
9648: foreach my $key (keys(%{$current_permissions})) {
9649: if ($key =~ /\0accesscontrol$/) {
9650: if (defined($group)) {
9651: if ($key !~ m-^\Q$group\E/-) {
9652: next;
9653: }
9654: }
9655: my ($fullpath) = split(/\0/,$key);
9656: if (ref($$current_permissions{$key}) eq 'HASH') {
9657: foreach my $control (keys(%{$$current_permissions{$key}})) {
9658: $access{$fullpath}{$control}=$$current_permissions{$fullpath."\0".$control};
9659: }
9660: }
9661: }
9662: }
9663: }
9664: return %access;
9665: }
9666:
9667: sub modify_access_controls {
9668: my ($file_name,$changes,$domain,$user)=@_;
9669: my ($outcome,$deloutcome);
9670: my %store_permissions;
9671: my %new_values;
9672: my %new_control;
9673: my %translation;
9674: my @deletions = ();
9675: my $now = time;
9676: if (exists($$changes{'activate'})) {
9677: if (ref($$changes{'activate'}) eq 'HASH') {
9678: my @newitems = sort(keys(%{$$changes{'activate'}}));
9679: my $numnew = scalar(@newitems);
9680: for (my $i=0; $i<$numnew; $i++) {
9681: my $newkey = $newitems[$i];
9682: my $newid = &Apache::loncommon::get_cgi_id();
9683: if ($newkey =~ /^\d+:/) {
9684: $newkey =~ s/^(\d+)/$newid/;
9685: $translation{$1} = $newid;
9686: } elsif ($newkey =~ /^\d+_\d+_\d+:/) {
9687: $newkey =~ s/^(\d+_\d+_\d+)/$newid/;
9688: $translation{$1} = $newid;
9689: }
9690: $new_values{$file_name."\0".$newkey} =
9691: $$changes{'activate'}{$newitems[$i]};
9692: $new_control{$newkey} = $now;
9693: }
9694: }
9695: }
9696: my %todelete;
9697: my %changed_items;
9698: foreach my $action ('delete','update') {
9699: if (exists($$changes{$action})) {
9700: if (ref($$changes{$action}) eq 'HASH') {
9701: foreach my $key (keys(%{$$changes{$action}})) {
9702: my ($itemnum) = ($key =~ /^([^:]+):/);
9703: if ($action eq 'delete') {
9704: $todelete{$itemnum} = 1;
9705: } else {
9706: $changed_items{$itemnum} = $key;
9707: }
9708: }
9709: }
9710: }
9711: }
9712: # get lock on access controls for file.
9713: my $lockhash = {
9714: $file_name."\0".'locked_access_records' => $env{'user.name'}.
9715: ':'.$env{'user.domain'},
9716: };
9717: my $tries = 0;
9718: my $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
9719:
9720: while (($gotlock ne 'ok') && $tries < 10) {
9721: $tries ++;
9722: sleep(0.1);
9723: $gotlock = &newput('file_permissions',$lockhash,$domain,$user);
9724: }
9725: if ($gotlock eq 'ok') {
9726: my %curr_permissions = &dump('file_permissions',$domain,$user,$file_name);
9727: my ($tmp)=keys(%curr_permissions);
9728: if ($tmp=~/^error:/) { undef(%curr_permissions); }
9729: if (exists($curr_permissions{$file_name."\0".'accesscontrol'})) {
9730: my $curr_controls = $curr_permissions{$file_name."\0".'accesscontrol'};
9731: if (ref($curr_controls) eq 'HASH') {
9732: foreach my $control_item (keys(%{$curr_controls})) {
9733: my ($itemnum) = ($control_item =~ /^([^:]+):/);
9734: if (defined($todelete{$itemnum})) {
9735: push(@deletions,$file_name."\0".$control_item);
9736: } else {
9737: if (defined($changed_items{$itemnum})) {
9738: $new_control{$changed_items{$itemnum}} = $now;
9739: push(@deletions,$file_name."\0".$control_item);
9740: $new_values{$file_name."\0".$changed_items{$itemnum}} = $$changes{'update'}{$changed_items{$itemnum}};
9741: } else {
9742: $new_control{$control_item} = $$curr_controls{$control_item};
9743: }
9744: }
9745: }
9746: }
9747: }
9748: my ($group);
9749: if (&is_course($domain,$user)) {
9750: ($group,my $file) = split(/\//,$file_name,2);
9751: }
9752: $deloutcome = &del('file_permissions',\@deletions,$domain,$user);
9753: $new_values{$file_name."\0".'accesscontrol'} = \%new_control;
9754: $outcome = &put('file_permissions',\%new_values,$domain,$user);
9755: # remove lock
9756: my @del_lock = ($file_name."\0".'locked_access_records');
9757: my $dellockoutcome = &del('file_permissions',\@del_lock,$domain,$user);
9758: my $sqlresult =
9759: &update_portfolio_table($user,$domain,$file_name,'portfolio_access',
9760: $group);
9761: } else {
9762: $outcome = "error: could not obtain lockfile\n";
9763: }
9764: return ($outcome,$deloutcome,\%new_values,\%translation);
9765: }
9766:
9767: sub make_public_indefinitely {
9768: my (@requrl) = @_;
9769: return &automated_portfile_access('public',\@requrl);
9770: }
9771:
9772: sub automated_portfile_access {
9773: my ($accesstype,$addsref,$delsref,$info) = @_;
9774: unless (($accesstype eq 'public') || ($accesstype eq 'ip')) {
9775: return 'invalid';
9776: }
9777: my %urls;
9778: if (ref($addsref) eq 'ARRAY') {
9779: foreach my $requrl (@{$addsref}) {
9780: if (&is_portfolio_url($requrl)) {
9781: unless (exists($urls{$requrl})) {
9782: $urls{$requrl} = 'add';
9783: }
9784: }
9785: }
9786: }
9787: if (ref($delsref) eq 'ARRAY') {
9788: foreach my $requrl (@{$delsref}) {
9789: if (&is_portfolio_url($requrl)) {
9790: unless (exists($urls{$requrl})) {
9791: $urls{$requrl} = 'delete';
9792: }
9793: }
9794: }
9795: }
9796: unless (keys(%urls)) {
9797: return 'invalid';
9798: }
9799: my $ip;
9800: if ($accesstype eq 'ip') {
9801: if (ref($info) eq 'HASH') {
9802: if ($info->{'ip'} ne '') {
9803: $ip = $info->{'ip'};
9804: }
9805: }
9806: if ($ip eq '') {
9807: return 'invalid';
9808: }
9809: }
9810: my $errors;
9811: my $now = time;
9812: my %current_perms;
9813: foreach my $requrl (sort(keys(%urls))) {
9814: my $action;
9815: if ($urls{$requrl} eq 'add') {
9816: $action = 'activate';
9817: } else {
9818: $action = 'none';
9819: }
9820: my $aclnum = 0;
9821: my (undef,$udom,$unum,$file_name,$group) =
9822: &parse_portfolio_url($requrl);
9823: unless (exists($current_perms{$unum.':'.$udom})) {
9824: $current_perms{$unum.':'.$udom} = &get_portfile_permissions($udom,$unum);
9825: }
9826: my %access_controls = &get_access_controls($current_perms{$unum.':'.$udom},
9827: $group,$file_name);
9828: foreach my $key (keys(%{$access_controls{$file_name}})) {
9829: my ($num,$scope,$end,$start) =
9830: ($key =~ /^([^:]+):([a-z]+)_(\d*)_?(\d*)$/);
9831: if ($scope eq $accesstype) {
9832: if (($start <= $now) && ($end == 0)) {
9833: if ($accesstype eq 'ip') {
9834: if (ref($access_controls{$file_name}{$key}) eq 'HASH') {
9835: if (ref($access_controls{$file_name}{$key}{'ip'}) eq 'ARRAY') {
9836: if (grep(/^\Q$ip\E$/,@{$access_controls{$file_name}{$key}{'ip'}})) {
9837: if ($urls{$requrl} eq 'add') {
9838: $action = 'none';
9839: last;
9840: } else {
9841: $action = 'delete';
9842: $aclnum = $num;
9843: last;
9844: }
9845: }
9846: }
9847: }
9848: } elsif ($accesstype eq 'public') {
9849: if ($urls{$requrl} eq 'add') {
9850: $action = 'none';
9851: last;
9852: } else {
9853: $action = 'delete';
9854: $aclnum = $num;
9855: last;
9856: }
9857: }
9858: } elsif ($accesstype eq 'public') {
9859: $action = 'update';
9860: $aclnum = $num;
9861: last;
9862: }
9863: }
9864: }
9865: if ($action eq 'none') {
9866: next;
9867: } else {
9868: my %changes;
9869: my $newend = 0;
9870: my $newstart = $now;
9871: my $newkey = $aclnum.':'.$accesstype.'_'.$newend.'_'.$newstart;
9872: $changes{$action}{$newkey} = {
9873: type => $accesstype,
9874: time => {
9875: start => $newstart,
9876: end => $newend,
9877: },
9878: };
9879: if ($accesstype eq 'ip') {
9880: $changes{$action}{$newkey}{'ip'} = [$ip];
9881: }
9882: my ($outcome,$deloutcome,$new_values,$translation) =
9883: &modify_access_controls($file_name,\%changes,$udom,$unum);
9884: unless ($outcome eq 'ok') {
9885: $errors .= $outcome.' ';
9886: }
9887: }
9888: }
9889: if ($errors) {
9890: $errors =~ s/\s$//;
9891: return $errors;
9892: } else {
9893: return 'ok';
9894: }
9895: }
9896:
9897: #------------------------------------------------------Get Marked as Read Only
9898:
9899: sub get_marked_as_readonly {
9900: my ($domain,$user,$what,$group) = @_;
9901: my $current_permissions = &get_portfile_permissions($domain,$user);
9902: my @readonly_files;
9903: my $cmp1=$what;
9904: if (ref($what)) { $cmp1=join('',@{$what}) };
9905: while (my ($file_name,$value) = each(%{$current_permissions})) {
9906: if (defined($group)) {
9907: if ($file_name !~ m-^\Q$group\E/-) {
9908: next;
9909: }
9910: }
9911: if (ref($value) eq "ARRAY"){
9912: foreach my $stored_what (@{$value}) {
9913: my $cmp2=$stored_what;
9914: if (ref($stored_what) eq 'ARRAY') {
9915: $cmp2=join('',@{$stored_what});
9916: }
9917: if ($cmp1 eq $cmp2) {
9918: push(@readonly_files, $file_name);
9919: last;
9920: } elsif (!defined($what)) {
9921: push(@readonly_files, $file_name);
9922: last;
9923: }
9924: }
9925: }
9926: }
9927: return @readonly_files;
9928: }
9929: #-----------------------------------------------------------Get Marked as Read Only Hash
9930:
9931: sub get_marked_as_readonly_hash {
9932: my ($current_permissions,$group,$what) = @_;
9933: my %readonly_files;
9934: while (my ($file_name,$value) = each(%{$current_permissions})) {
9935: if (defined($group)) {
9936: if ($file_name !~ m-^\Q$group\E/-) {
9937: next;
9938: }
9939: }
9940: if (ref($value) eq "ARRAY"){
9941: foreach my $stored_what (@{$value}) {
9942: if (ref($stored_what) eq 'ARRAY') {
9943: foreach my $lock_descriptor(@{$stored_what}) {
9944: if ($lock_descriptor eq 'graded') {
9945: $readonly_files{$file_name} = 'graded';
9946: } elsif ($lock_descriptor eq 'handback') {
9947: $readonly_files{$file_name} = 'handback';
9948: } else {
9949: if (!exists($readonly_files{$file_name})) {
9950: $readonly_files{$file_name} = 'locked';
9951: }
9952: }
9953: }
9954: }
9955: }
9956: }
9957: }
9958: return %readonly_files;
9959: }
9960: # ------------------------------------------------------------ Unmark as Read Only
9961:
9962: sub unmark_as_readonly {
9963: # unmarks $file_name (if $file_name is defined), or all files locked by $what
9964: # for portfolio submissions, $what contains [$symb,$crsid]
9965: my ($domain,$user,$what,$file_name,$group) = @_;
9966: $file_name = &declutter_portfile($file_name);
9967: my $symb_crs = $what;
9968: if (ref($what)) { $symb_crs=join('',@$what); }
9969: my %current_permissions = &dump('file_permissions',$domain,$user,$group);
9970: my ($tmp)=keys(%current_permissions);
9971: if ($tmp=~/^error:/) { undef(%current_permissions); }
9972: my @readonly_files = &get_marked_as_readonly($domain,$user,$what,$group);
9973: foreach my $file (@readonly_files) {
9974: my $clean_file = &declutter_portfile($file);
9975: if (defined($file_name) && ($file_name ne $clean_file)) { next; }
9976: my $current_locks = $current_permissions{$file};
9977: my @new_locks;
9978: my @del_keys;
9979: if (ref($current_locks) eq "ARRAY"){
9980: foreach my $locker (@{$current_locks}) {
9981: my $compare=$locker;
9982: if (ref($locker) eq 'ARRAY') {
9983: $compare=join('',@{$locker});
9984: if ($compare ne $symb_crs) {
9985: push(@new_locks, $locker);
9986: }
9987: }
9988: }
9989: if (scalar(@new_locks) > 0) {
9990: $current_permissions{$file} = \@new_locks;
9991: } else {
9992: push(@del_keys, $file);
9993: &del('file_permissions',\@del_keys, $domain, $user);
9994: delete($current_permissions{$file});
9995: }
9996: }
9997: }
9998: &put('file_permissions',\%current_permissions,$domain,$user);
9999: return;
10000: }
10001:
10002: # ------------------------------------------------------------ Directory lister
10003:
10004: sub dirlist {
10005: my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
10006: $uri=~s/^\///;
10007: $uri=~s/\/$//;
10008: my ($udom, $uname);
10009: if ($getuserdir) {
10010: $udom = $userdomain;
10011: $uname = $username;
10012: } else {
10013: (undef,$udom,$uname)=split(/\//,$uri);
10014: if(defined($userdomain)) {
10015: $udom = $userdomain;
10016: }
10017: if(defined($username)) {
10018: $uname = $username;
10019: }
10020: }
10021: my ($dirRoot,$listing,@listing_results);
10022:
10023: $dirRoot = $perlvar{'lonDocRoot'};
10024: if (defined($getpropath)) {
10025: $dirRoot = &propath($udom,$uname);
10026: $dirRoot =~ s/\/$//;
10027: } elsif (defined($getuserdir)) {
10028: my $subdir=$uname.'__';
10029: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
10030: $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
10031: ."/$udom/$subdir/$uname";
10032: } elsif (defined($alternateRoot)) {
10033: $dirRoot = $alternateRoot;
10034: }
10035:
10036: if($udom) {
10037: if($uname) {
10038: my $uhome = &homeserver($uname,$udom);
10039: if ($uhome eq 'no_host') {
10040: return ([],'no_host');
10041: }
10042: $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
10043: .$getuserdir.':'.&escape($dirRoot)
10044: .':'.&escape($uname).':'.&escape($udom),$uhome);
10045: if ($listing eq 'unknown_cmd') {
10046: $listing = &reply('ls2:'.$dirRoot.'/'.$uri,$uhome);
10047: } else {
10048: @listing_results = map { &unescape($_); } split(/:/,$listing);
10049: }
10050: if ($listing eq 'unknown_cmd') {
10051: $listing = &reply('ls:'.$dirRoot.'/'.$uri,$uhome);
10052: @listing_results = split(/:/,$listing);
10053: } else {
10054: @listing_results = map { &unescape($_); } split(/:/,$listing);
10055: }
10056: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
10057: ($listing eq 'rejected') || ($listing eq 'refused') ||
10058: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
10059: return ([],$listing);
10060: } else {
10061: return (\@listing_results);
10062: }
10063: } elsif(!$alternateRoot) {
10064: my (%allusers,%listerror);
10065: my %servers = &get_servers($udom,'library');
10066: foreach my $tryserver (keys(%servers)) {
10067: $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
10068: &escape($udom),$tryserver);
10069: if ($listing eq 'unknown_cmd') {
10070: $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
10071: $udom, $tryserver);
10072: } else {
10073: @listing_results = map { &unescape($_); } split(/:/,$listing);
10074: }
10075: if ($listing eq 'unknown_cmd') {
10076: $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
10077: $udom, $tryserver);
10078: @listing_results = split(/:/,$listing);
10079: } else {
10080: @listing_results =
10081: map { &unescape($_); } split(/:/,$listing);
10082: }
10083: if (($listing eq 'no_such_host') || ($listing eq 'con_lost') ||
10084: ($listing eq 'rejected') || ($listing eq 'refused') ||
10085: ($listing eq 'no_such_dir') || ($listing eq 'empty')) {
10086: $listerror{$tryserver} = $listing;
10087: } else {
10088: foreach my $line (@listing_results) {
10089: my ($entry) = split(/&/,$line,2);
10090: $allusers{$entry} = 1;
10091: }
10092: }
10093: }
10094: my @alluserslist=();
10095: foreach my $user (sort(keys(%allusers))) {
10096: push(@alluserslist,$user.'&user');
10097: }
10098: return (\@alluserslist);
10099: } else {
10100: return ([],'missing username');
10101: }
10102: } elsif(!defined($getpropath)) {
10103: my $path = $perlvar{'lonDocRoot'}.'/res/';
10104: my @all_domains = map { $path.$_.'/&domain'; } (sort(&all_domains()));
10105: return (\@all_domains);
10106: } else {
10107: return ([],'missing domain');
10108: }
10109: }
10110:
10111: # --------------------------------------------- GetFileTimestamp
10112: # This function utilizes dirlist and returns the date stamp for
10113: # when it was last modified. It will also return an error of -1
10114: # if an error occurs
10115:
10116: sub GetFileTimestamp {
10117: my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
10118: $studentDomain = &LONCAPA::clean_domain($studentDomain);
10119: $studentName = &LONCAPA::clean_username($studentName);
10120: my ($fileref,$error) = &dirlist($filename,$studentDomain,$studentName,
10121: undef,$getuserdir);
10122: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
10123: return -1;
10124: }
10125: if (ref($fileref) eq 'ARRAY') {
10126: my @stats = split('&',$fileref->[0]);
10127: # @stats contains first the filename, then the stat output
10128: return $stats[10]; # so this is 10 instead of 9.
10129: } else {
10130: return -1;
10131: }
10132: }
10133:
10134: sub stat_file {
10135: my ($uri) = @_;
10136: $uri = &clutter_with_no_wrapper($uri);
10137:
10138: my ($udom,$uname,$file);
10139: if ($uri =~ m-^/(uploaded|editupload)/-) {
10140: ($udom,$uname,$file) =
10141: ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
10142: $file = 'userfiles/'.$file;
10143: }
10144: if ($uri =~ m-^/res/-) {
10145: ($udom,$uname) =
10146: ($uri =~ m-/(?:res)/?($match_domain)/?($match_username)/-);
10147: $file = $uri;
10148: }
10149:
10150: if (!$udom || !$uname || !$file) {
10151: # unable to handle the uri
10152: return ();
10153: }
10154: my $getpropath;
10155: if ($file =~ /^userfiles\//) {
10156: $getpropath = 1;
10157: }
10158: my ($listref,$error) = &dirlist($file,$udom,$uname,$getpropath);
10159: if (($error eq 'empty') || ($error eq 'no_such_dir')) {
10160: return ();
10161: } else {
10162: if (ref($listref) eq 'ARRAY') {
10163: my @stats = split('&',$listref->[0]);
10164: shift(@stats); #filename is first
10165: return @stats;
10166: }
10167: }
10168: return ();
10169: }
10170:
10171: # -------------------------------------------------------- Value of a Condition
10172:
10173: # gets the value of a specific preevaluated condition
10174: # stored in the string $env{user.state.<cid>}
10175: # or looks up a condition reference in the bighash and if if hasn't
10176: # already been evaluated recurses into docondval to get the value of
10177: # the condition, then memoizing it to
10178: # $env{user.state.<cid>.<condition>}
10179: sub directcondval {
10180: my $number=shift;
10181: if (!defined($env{'user.state.'.$env{'request.course.id'}})) {
10182: &Apache::lonuserstate::evalstate();
10183: }
10184: if (exists($env{'user.state.'.$env{'request.course.id'}.".$number"})) {
10185: return $env{'user.state.'.$env{'request.course.id'}.".$number"};
10186: } elsif ($number =~ /^_/) {
10187: my $sub_condition;
10188: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
10189: &GDBM_READER(),0640)) {
10190: $sub_condition=$bighash{'conditions'.$number};
10191: untie(%bighash);
10192: }
10193: my $value = &docondval($sub_condition);
10194: &appenv({'user.state.'.$env{'request.course.id'}.".$number" => $value});
10195: return $value;
10196: }
10197: if ($env{'user.state.'.$env{'request.course.id'}}) {
10198: return substr($env{'user.state.'.$env{'request.course.id'}},$number,1);
10199: } else {
10200: return 2;
10201: }
10202: }
10203:
10204: # get the collection of conditions for this resource
10205: sub condval {
10206: my $condidx=shift;
10207: my $allpathcond='';
10208: foreach my $cond (split(/\|/,$condidx)) {
10209: if (defined($env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond})) {
10210: $allpathcond.=
10211: '('.$env{'acc.cond.'.$env{'request.course.id'}.'.'.$cond}.')|';
10212: }
10213: }
10214: $allpathcond=~s/\|$//;
10215: return &docondval($allpathcond);
10216: }
10217:
10218: #evaluates an expression of conditions
10219: sub docondval {
10220: my ($allpathcond) = @_;
10221: my $result=0;
10222: if ($env{'request.course.id'}
10223: && defined($allpathcond)) {
10224: my $operand='|';
10225: my @stack;
10226: foreach my $chunk ($allpathcond=~/(\d+|_\d+\.\d+|\(|\)|\&|\|)/g) {
10227: if ($chunk eq '(') {
10228: push @stack,($operand,$result);
10229: } elsif ($chunk eq ')') {
10230: my $before=pop @stack;
10231: if (pop @stack eq '&') {
10232: $result=$result>$before?$before:$result;
10233: } else {
10234: $result=$result>$before?$result:$before;
10235: }
10236: } elsif (($chunk eq '&') || ($chunk eq '|')) {
10237: $operand=$chunk;
10238: } else {
10239: my $new=directcondval($chunk);
10240: if ($operand eq '&') {
10241: $result=$result>$new?$new:$result;
10242: } else {
10243: $result=$result>$new?$result:$new;
10244: }
10245: }
10246: }
10247: }
10248: return $result;
10249: }
10250:
10251: # ---------------------------------------------------- Devalidate courseresdata
10252:
10253: sub devalidatecourseresdata {
10254: my ($coursenum,$coursedomain)=@_;
10255: my $hashid=$coursenum.':'.$coursedomain;
10256: &devalidate_cache_new('courseres',$hashid);
10257: }
10258:
10259:
10260: # --------------------------------------------------- Course Resourcedata Query
10261: #
10262: # Parameters:
10263: # $coursenum - Number of the course.
10264: # $coursedomain - Domain at which the course was created.
10265: # Returns:
10266: # A hash of the course parameters along (I think) with timestamps
10267: # and version info.
10268:
10269: sub get_courseresdata {
10270: my ($coursenum,$coursedomain)=@_;
10271: my $coursehom=&homeserver($coursenum,$coursedomain);
10272: my $hashid=$coursenum.':'.$coursedomain;
10273: my ($result,$cached)=&is_cached_new('courseres',$hashid);
10274: my %dumpreply;
10275: unless (defined($cached)) {
10276: %dumpreply=&dump('resourcedata',$coursedomain,$coursenum);
10277: $result=\%dumpreply;
10278: my ($tmp) = keys(%dumpreply);
10279: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
10280: &do_cache_new('courseres',$hashid,$result,600);
10281: } elsif ($tmp =~ /^(con_lost|no_such_host)/) {
10282: return $tmp;
10283: } elsif ($tmp =~ /^(error)/) {
10284: $result=undef;
10285: &do_cache_new('courseres',$hashid,$result,600);
10286: }
10287: }
10288: return $result;
10289: }
10290:
10291: sub devalidateuserresdata {
10292: my ($uname,$udom)=@_;
10293: my $hashid="$udom:$uname";
10294: &devalidate_cache_new('userres',$hashid);
10295: }
10296:
10297: sub get_userresdata {
10298: my ($uname,$udom)=@_;
10299: #most student don\'t have any data set, check if there is some data
10300: if (&EXT_cache_status($udom,$uname)) { return undef; }
10301:
10302: my $hashid="$udom:$uname";
10303: my ($result,$cached)=&is_cached_new('userres',$hashid);
10304: if (!defined($cached)) {
10305: my %resourcedata=&dump('resourcedata',$udom,$uname);
10306: $result=\%resourcedata;
10307: &do_cache_new('userres',$hashid,$result,600);
10308: }
10309: my ($tmp)=keys(%$result);
10310: if (($tmp!~/^error\:/) && ($tmp!~/^con_lost/)) {
10311: return $result;
10312: }
10313: #error 2 occurs when the .db doesn't exist
10314: if ($tmp!~/error: 2 /) {
10315: if ((!defined($cached)) || ($tmp ne 'con_lost')) {
10316: &logthis("<font color=\"blue\">WARNING:".
10317: " Trying to get resource data for ".
10318: $uname." at ".$udom.": ".
10319: $tmp."</font>");
10320: }
10321: } elsif ($tmp=~/error: 2 /) {
10322: #&EXT_cache_set($udom,$uname);
10323: &do_cache_new('userres',$hashid,undef,600);
10324: undef($tmp); # not really an error so don't send it back
10325: }
10326: return $tmp;
10327: }
10328: #----------------------------------------------- resdata - return resource data
10329: # Purpose:
10330: # Return resource data for either users or for a course.
10331: # Parameters:
10332: # $name - Course/user name.
10333: # $domain - Name of the domain the user/course is registered on.
10334: # $type - Type of thing $name is (must be 'course' or 'user'
10335: # $mapp - decluttered URL of enclosing map
10336: # $recursed - Ref to scalar -- set to 1, if nested maps have been recursed.
10337: # $recurseup - Ref to array of map URLs, starting with map containing
10338: # $mapp up through hierarchy of nested maps to top level map.
10339: # $courseid - CourseID (first part of param identifier).
10340: # $modifier - Middle part of param identifier.
10341: # $what - Last part of param identifier.
10342: # @which - Array of names of resources desired.
10343: # Returns:
10344: # The value of the first reasource in @which that is found in the
10345: # resource hash.
10346: # Exceptional Conditions:
10347: # If the $type passed in is not valid (not the string 'course' or
10348: # 'user', an undefined reference is returned.
10349: # If none of the resources are found, an undef is returned
10350: sub resdata {
10351: my ($name,$domain,$type,$mapp,$recursed,$recurseup,$courseid,
10352: $modifier,$what,@which)=@_;
10353: my $result;
10354: if ($type eq 'course') {
10355: $result=&get_courseresdata($name,$domain);
10356: } elsif ($type eq 'user') {
10357: $result=&get_userresdata($name,$domain);
10358: }
10359: if (!ref($result)) { return $result; }
10360: foreach my $item (@which) {
10361: if ($item->[1] eq 'course') {
10362: if ((ref($recurseup) eq 'ARRAY') && (ref($recursed) eq 'SCALAR')) {
10363: unless ($$recursed) {
10364: @{$recurseup} = &get_map_hierarchy($mapp,$courseid);
10365: $$recursed = 1;
10366: }
10367: foreach my $item (@${recurseup}) {
10368: my $norecursechk=$courseid.$modifier.$item.'___(all).'.$what;
10369: last if (defined($result->{$norecursechk}));
10370: my $recursechk=$courseid.$modifier.$item.'___(rec).'.$what;
10371: if (defined($result->{$recursechk})) { return [$result->{$recursechk},'map']; }
10372: }
10373: }
10374: }
10375: if (defined($result->{$item->[0]})) {
10376: return [$result->{$item->[0]},$item->[1]];
10377: }
10378: }
10379: return undef;
10380: }
10381:
10382: sub get_domain_ltitools {
10383: my ($cdom) = @_;
10384: my %ltitools;
10385: my ($result,$cached)=&is_cached_new('ltitools',$cdom);
10386: if (defined($cached)) {
10387: if (ref($result) eq 'HASH') {
10388: %ltitools = %{$result};
10389: }
10390: } else {
10391: my %domconfig = &get_dom('configuration',['ltitools'],$cdom);
10392: if (ref($domconfig{'ltitools'}) eq 'HASH') {
10393: %ltitools = %{$domconfig{'ltitools'}};
10394: }
10395: my $cachetime = 24*60*60;
10396: &do_cache_new('ltitools',$cdom,\%ltitools,$cachetime);
10397: }
10398: return %ltitools;
10399: }
10400:
10401: sub get_numsuppfiles {
10402: my ($cnum,$cdom,$ignorecache)=@_;
10403: my $hashid=$cnum.':'.$cdom;
10404: my ($suppcount,$cached);
10405: unless ($ignorecache) {
10406: ($suppcount,$cached) = &is_cached_new('suppcount',$hashid);
10407: }
10408: unless (defined($cached)) {
10409: my $chome=&homeserver($cnum,$cdom);
10410: unless ($chome eq 'no_host') {
10411: ($suppcount,my $errors) = (0,0);
10412: my $suppmap = 'supplemental.sequence';
10413: ($suppcount,$errors) =
10414: &Apache::loncommon::recurse_supplemental($cnum,$cdom,$suppmap,$suppcount,$errors);
10415: }
10416: &do_cache_new('suppcount',$hashid,$suppcount,600);
10417: }
10418: return $suppcount;
10419: }
10420:
10421: #
10422: # EXT resource caching routines
10423: #
10424:
10425: {
10426: # Cache (5 seconds) of map hierarchy for speedup of navmaps display
10427: #
10428: # The course for which we cache
10429: my $cachedmapkey='';
10430: # The cached recursive maps for this course
10431: my %cachedmaps=();
10432: # When this was last done
10433: my $cachedmaptime='';
10434:
10435: sub clear_EXT_cache_status {
10436: &delenv('cache.EXT.');
10437: }
10438:
10439: sub EXT_cache_status {
10440: my ($target_domain,$target_user) = @_;
10441: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
10442: if (exists($env{$cachename}) && ($env{$cachename}+600) > time) {
10443: # We know already the user has no data
10444: return 1;
10445: } else {
10446: return 0;
10447: }
10448: }
10449:
10450: sub EXT_cache_set {
10451: my ($target_domain,$target_user) = @_;
10452: my $cachename = 'cache.EXT.'.$target_user.'.'.$target_domain;
10453: #&appenv({$cachename => time});
10454: }
10455:
10456: # --------------------------------------------------------- Value of a Variable
10457: sub EXT {
10458:
10459: my ($varname,$symbparm,$udom,$uname,$usection,$recurse,$cid)=@_;
10460: unless ($varname) { return ''; }
10461: #get real user name/domain, courseid and symb
10462: my $courseid;
10463: my $publicuser;
10464: if ($symbparm) {
10465: $symbparm=&get_symb_from_alias($symbparm);
10466: }
10467: if (!($uname && $udom)) {
10468: (my $cursymb,$courseid,$udom,$uname,$publicuser)= &whichuser($symbparm);
10469: if (!$symbparm) { $symbparm=$cursymb; }
10470: } else {
10471: $courseid=$env{'request.course.id'};
10472: }
10473: my ($realm,$space,$qualifier,@therest)=split(/\./,$varname);
10474: my $rest;
10475: if (defined($therest[0])) {
10476: $rest=join('.',@therest);
10477: } else {
10478: $rest='';
10479: }
10480:
10481: my $qualifierrest=$qualifier;
10482: if ($rest) { $qualifierrest.='.'.$rest; }
10483: my $spacequalifierrest=$space;
10484: if ($qualifierrest) { $spacequalifierrest.='.'.$qualifierrest; }
10485: if ($realm eq 'user') {
10486: # --------------------------------------------------------------- user.resource
10487: if ($space eq 'resource') {
10488: if ( (defined($Apache::lonhomework::parsing_a_problem)
10489: || defined($Apache::lonhomework::parsing_a_task))
10490: &&
10491: ($symbparm eq &symbread()) ) {
10492: # if we are in the middle of processing the resource the
10493: # get the value we are planning on committing
10494: if (defined($Apache::lonhomework::results{$qualifierrest})) {
10495: return $Apache::lonhomework::results{$qualifierrest};
10496: } else {
10497: return $Apache::lonhomework::history{$qualifierrest};
10498: }
10499: } else {
10500: my %restored;
10501: if ($publicuser || $env{'request.state'} eq 'construct') {
10502: %restored=&tmprestore($symbparm,$courseid,$udom,$uname);
10503: } else {
10504: %restored=&restore($symbparm,$courseid,$udom,$uname);
10505: }
10506: return $restored{$qualifierrest};
10507: }
10508: # ----------------------------------------------------------------- user.access
10509: } elsif ($space eq 'access') {
10510: # FIXME - not supporting calls for a specific user
10511: return &allowed($qualifier,$rest);
10512: # ------------------------------------------ user.preferences, user.environment
10513: } elsif (($space eq 'preferences') || ($space eq 'environment')) {
10514: if (($uname eq $env{'user.name'}) &&
10515: ($udom eq $env{'user.domain'})) {
10516: return $env{join('.',('environment',$qualifierrest))};
10517: } else {
10518: my %returnhash;
10519: if (!$publicuser) {
10520: %returnhash=&userenvironment($udom,$uname,
10521: $qualifierrest);
10522: }
10523: return $returnhash{$qualifierrest};
10524: }
10525: # ----------------------------------------------------------------- user.course
10526: } elsif ($space eq 'course') {
10527: # FIXME - not supporting calls for a specific user
10528: return $env{join('.',('request.course',$qualifier))};
10529: # ------------------------------------------------------------------- user.role
10530: } elsif ($space eq 'role') {
10531: # FIXME - not supporting calls for a specific user
10532: my ($role,$where)=split(/\./,$env{'request.role'});
10533: if ($qualifier eq 'value') {
10534: return $role;
10535: } elsif ($qualifier eq 'extent') {
10536: return $where;
10537: }
10538: # ----------------------------------------------------------------- user.domain
10539: } elsif ($space eq 'domain') {
10540: return $udom;
10541: # ------------------------------------------------------------------- user.name
10542: } elsif ($space eq 'name') {
10543: return $uname;
10544: # ---------------------------------------------------- Any other user namespace
10545: } else {
10546: my %reply;
10547: if (!$publicuser) {
10548: %reply=&get($space,[$qualifierrest],$udom,$uname);
10549: }
10550: return $reply{$qualifierrest};
10551: }
10552: } elsif ($realm eq 'query') {
10553: # ---------------------------------------------- pull stuff out of query string
10554: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
10555: [$spacequalifierrest]);
10556: return $env{'form.'.$spacequalifierrest};
10557: } elsif ($realm eq 'request') {
10558: # ------------------------------------------------------------- request.browser
10559: if ($space eq 'browser') {
10560: return $env{'browser.'.$qualifier};
10561: # ------------------------------------------------------------ request.filename
10562: } else {
10563: return $env{'request.'.$spacequalifierrest};
10564: }
10565: } elsif ($realm eq 'course') {
10566: # ---------------------------------------------------------- course.description
10567: return $env{'course.'.$courseid.'.'.$spacequalifierrest};
10568: } elsif ($realm eq 'resource') {
10569:
10570: if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
10571: if (!$symbparm) { $symbparm=&symbread(); }
10572: }
10573:
10574: if ($qualifier eq '') {
10575: if ($space eq 'title') {
10576: if (!$symbparm) { $symbparm = $env{'request.filename'}; }
10577: return &gettitle($symbparm);
10578: }
10579:
10580: if ($space eq 'map') {
10581: my ($map) = &decode_symb($symbparm);
10582: return &symbread($map);
10583: }
10584: if ($space eq 'maptitle') {
10585: my ($map) = &decode_symb($symbparm);
10586: return &gettitle($map);
10587: }
10588: if ($space eq 'filename') {
10589: if ($symbparm) {
10590: return &clutter((&decode_symb($symbparm))[2]);
10591: }
10592: return &hreflocation('',$env{'request.filename'});
10593: }
10594:
10595: if ((defined($courseid)) && ($courseid eq $env{'request.course.id'}) && $symbparm) {
10596: if ($space eq 'visibleparts') {
10597: my $navmap = Apache::lonnavmaps::navmap->new();
10598: my $item;
10599: if (ref($navmap)) {
10600: my $res = $navmap->getBySymb($symbparm);
10601: my $parts = $res->parts();
10602: if (ref($parts) eq 'ARRAY') {
10603: $item = join(',',@{$parts});
10604: }
10605: undef($navmap);
10606: }
10607: return $item;
10608: }
10609: }
10610: }
10611:
10612: my ($section, $group, @groups, @recurseup, $recursed);
10613: my ($courselevelm,$courseleveli,$courselevel,$mapp);
10614: if (($courseid eq '') && ($cid)) {
10615: $courseid = $cid;
10616: }
10617: if (($symbparm && $courseid) &&
10618: (($courseid eq $env{'request.course.id'}) || ($courseid eq $cid))) {
10619:
10620: #print '<br>'.$space.' - '.$qualifier.' - '.$spacequalifierrest;
10621:
10622: # ----------------------------------------------------- Cascading lookup scheme
10623: my $symbp=$symbparm;
10624: $mapp=&deversion((&decode_symb($symbp))[0]);
10625: my $symbparm=$symbp.'.'.$spacequalifierrest;
10626: my $recurseparm=$mapp.'___(rec).'.$spacequalifierrest;
10627: my $mapparm=$mapp.'___(all).'.$spacequalifierrest;
10628: if (($env{'user.name'} eq $uname) &&
10629: ($env{'user.domain'} eq $udom)) {
10630: $section=$env{'request.course.sec'};
10631: @groups = split(/:/,$env{'request.course.groups'});
10632: @groups=&sort_course_groups($courseid,@groups);
10633: } else {
10634: if (! defined($usection)) {
10635: $section=&getsection($udom,$uname,$courseid);
10636: } else {
10637: $section = $usection;
10638: }
10639: @groups = &get_users_groups($udom,$uname,$courseid);
10640: }
10641:
10642: my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
10643: my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
10644: my $secleveli=$courseid.'.['.$section.'].'.$recurseparm;
10645: my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
10646:
10647: $courselevel=$courseid.'.'.$spacequalifierrest;
10648: my $courselevelr=$courseid.'.'.$symbparm;
10649: $courseleveli=$courseid.'.'.$recurseparm;
10650: $courselevelm=$courseid.'.'.$mapparm;
10651:
10652: # ----------------------------------------------------------- first, check user
10653:
10654: my $userreply=&resdata($uname,$udom,'user',$mapp,\$recursed,
10655: \@recurseup,$courseid,'.',$spacequalifierrest,
10656: ([$courselevelr,'resource'],
10657: [$courselevelm,'map' ],
10658: [$courseleveli,'map' ],
10659: [$courselevel, 'course' ]));
10660: if (defined($userreply)) { return &get_reply($userreply); }
10661:
10662: # ------------------------------------------------ second, check some of course
10663: my $coursereply;
10664: if (@groups > 0) {
10665: $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
10666: $recurseparm,$mapparm,$spacequalifierrest,
10667: $mapp,\$recursed,\@recurseup);
10668: if (defined($coursereply)) { return &get_reply($coursereply); }
10669: }
10670:
10671: $coursereply=&resdata($env{'course.'.$courseid.'.num'},
10672: $env{'course.'.$courseid.'.domain'},
10673: 'course',$mapp,\$recursed,\@recurseup,
10674: $courseid,'.['.$section.'].',$spacequalifierrest,
10675: ([$seclevelr, 'resource'],
10676: [$seclevelm, 'map' ],
10677: [$secleveli, 'map' ],
10678: [$seclevel, 'course' ],
10679: [$courselevelr,'resource']));
10680: if (defined($coursereply)) { return &get_reply($coursereply); }
10681:
10682: # ------------------------------------------------------ third, check map parms
10683: my %parmhash=();
10684: my $thisparm='';
10685: if (tie(%parmhash,'GDBM_File',
10686: $env{'request.course.fn'}.'_parms.db',
10687: &GDBM_READER(),0640)) {
10688: $thisparm=$parmhash{$symbparm};
10689: untie(%parmhash);
10690: }
10691: if ($thisparm) { return &get_reply([$thisparm,'resource']); }
10692: }
10693: # ------------------------------------------ fourth, look in resource metadata
10694:
10695: my $what = $spacequalifierrest;
10696: $what=~s/\./\_/;
10697: my $filename;
10698: if (!$symbparm) { $symbparm=&symbread(); }
10699: if ($symbparm) {
10700: $filename=(&decode_symb($symbparm))[2];
10701: } else {
10702: $filename=$env{'request.filename'};
10703: }
10704: my $metadata=&metadata($filename,$what);
10705: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
10706: $metadata=&metadata($filename,'parameter_'.$what);
10707: if (defined($metadata)) { return &get_reply([$metadata,'resource']); }
10708:
10709: # ----------------------------------------------- fifth, look in rest of course
10710: if ($symbparm && defined($courseid) &&
10711: $courseid eq $env{'request.course.id'}) {
10712: my $coursereply=&resdata($env{'course.'.$courseid.'.num'},
10713: $env{'course.'.$courseid.'.domain'},
10714: 'course',$mapp,\$recursed,\@recurseup,
10715: $courseid,'.',$spacequalifierrest,
10716: ([$courselevelm,'map' ],
10717: [$courseleveli,'map' ],
10718: [$courselevel, 'course']));
10719: if (defined($coursereply)) { return &get_reply($coursereply); }
10720: }
10721: # ------------------------------------------------------------------ Cascade up
10722: unless ($space eq '0') {
10723: my @parts=split(/_/,$space);
10724: my $id=pop(@parts);
10725: my $part=join('_',@parts);
10726: if ($part eq '') { $part='0'; }
10727: my @partgeneral=&EXT('resource.'.$part.'.'.$qualifierrest,
10728: $symbparm,$udom,$uname,$section,1);
10729: if (defined($partgeneral[0])) { return &get_reply(\@partgeneral); }
10730: }
10731: if ($recurse) { return undef; }
10732: my $pack_def=&packages_tab_default($filename,$varname);
10733: if (defined($pack_def)) { return &get_reply([$pack_def,'resource']); }
10734: # ---------------------------------------------------- Any other user namespace
10735: } elsif ($realm eq 'environment') {
10736: # ----------------------------------------------------------------- environment
10737: if (($uname eq $env{'user.name'})&&($udom eq $env{'user.domain'})) {
10738: return $env{'environment.'.$spacequalifierrest};
10739: } else {
10740: if ($uname eq 'anonymous' && $udom eq '') {
10741: return '';
10742: }
10743: my %returnhash=&userenvironment($udom,$uname,
10744: $spacequalifierrest);
10745: return $returnhash{$spacequalifierrest};
10746: }
10747: } elsif ($realm eq 'system') {
10748: # ----------------------------------------------------------------- system.time
10749: if ($space eq 'time') {
10750: return time;
10751: }
10752: } elsif ($realm eq 'server') {
10753: # ----------------------------------------------------------------- system.time
10754: if ($space eq 'name') {
10755: return $ENV{'SERVER_NAME'};
10756: }
10757: }
10758: return '';
10759: }
10760:
10761: sub get_reply {
10762: my ($reply_value) = @_;
10763: if (ref($reply_value) eq 'ARRAY') {
10764: if (wantarray) {
10765: return @$reply_value;
10766: }
10767: return $reply_value->[0];
10768: } else {
10769: return $reply_value;
10770: }
10771: }
10772:
10773: sub check_group_parms {
10774: my ($courseid,$groups,$symbparm,$recurseparm,$mapparm,$what,$mapp,
10775: $recursed,$recurseupref) = @_;
10776: my @levels = ([$symbparm,'resource'],[$mapparm,'map'],[$recurseparm,'map'],
10777: [$what,'course']);
10778: my $coursereply;
10779: foreach my $group (@{$groups}) {
10780: my @groupitems = ();
10781: foreach my $level (@levels) {
10782: my $item = $courseid.'.['.$group.'].'.$level->[0];
10783: push(@groupitems,[$item,$level->[1]]);
10784: }
10785: my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
10786: $env{'course.'.$courseid.'.domain'},
10787: 'course',$mapp,$recursed,$recurseupref,
10788: $courseid,'.['.$group.'].',$what,
10789: @groupitems);
10790: last if (defined($coursereply));
10791: }
10792: return $coursereply;
10793: }
10794:
10795: sub get_map_hierarchy {
10796: my ($mapname,$courseid) = @_;
10797: my @recurseup = ();
10798: if ($mapname) {
10799: if (($cachedmapkey eq $courseid) &&
10800: (abs($cachedmaptime-time)<5)) {
10801: if (ref($cachedmaps{$mapname}) eq 'ARRAY') {
10802: return @{$cachedmaps{$mapname}};
10803: }
10804: }
10805: my $navmap = Apache::lonnavmaps::navmap->new();
10806: if (ref($navmap)) {
10807: @recurseup = $navmap->recurseup_maps($mapname);
10808: undef($navmap);
10809: $cachedmaps{$mapname} = \@recurseup;
10810: $cachedmaptime=time;
10811: $cachedmapkey=$courseid;
10812: }
10813: }
10814: return @recurseup;
10815: }
10816:
10817: }
10818:
10819: sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
10820: my ($courseid,@groups) = @_;
10821: @groups = sort(@groups);
10822: return @groups;
10823: }
10824:
10825: sub packages_tab_default {
10826: my ($uri,$varname)=@_;
10827: my (undef,$part,$name)=split(/\./,$varname);
10828:
10829: my (@extension,@specifics,$do_default);
10830: foreach my $package (split(/,/,&metadata($uri,'packages'))) {
10831: my ($pack_type,$pack_part)=split(/_/,$package,2);
10832: if ($pack_type eq 'default') {
10833: $do_default=1;
10834: } elsif ($pack_type eq 'extension') {
10835: push(@extension,[$package,$pack_type,$pack_part]);
10836: } elsif ($pack_part eq $part || $pack_type eq 'part') {
10837: # only look at packages defaults for packages that this id is
10838: push(@specifics,[$package,$pack_type,$pack_part]);
10839: }
10840: }
10841: # first look for a package that matches the requested part id
10842: foreach my $package (@specifics) {
10843: my (undef,$pack_type,$pack_part)=@{$package};
10844: next if ($pack_part ne $part);
10845: if (defined($packagetab{"$pack_type&$name&default"})) {
10846: return $packagetab{"$pack_type&$name&default"};
10847: }
10848: }
10849: # look for any possible matching non extension_ package
10850: foreach my $package (@specifics) {
10851: my (undef,$pack_type,$pack_part)=@{$package};
10852: if (defined($packagetab{"$pack_type&$name&default"})) {
10853: return $packagetab{"$pack_type&$name&default"};
10854: }
10855: if ($pack_type eq 'part') { $pack_part='0'; }
10856: if (defined($packagetab{$pack_type."_".$pack_part."&$name&default"})) {
10857: return $packagetab{$pack_type."_".$pack_part."&$name&default"};
10858: }
10859: }
10860: # look for any posible extension_ match
10861: foreach my $package (@extension) {
10862: my ($package,$pack_type)=@{$package};
10863: if (defined($packagetab{"$pack_type&$name&default"})) {
10864: return $packagetab{"$pack_type&$name&default"};
10865: }
10866: if (defined($packagetab{$package."&$name&default"})) {
10867: return $packagetab{$package."&$name&default"};
10868: }
10869: }
10870: # look for a global default setting
10871: if ($do_default && defined($packagetab{"default&$name&default"})) {
10872: return $packagetab{"default&$name&default"};
10873: }
10874: return undef;
10875: }
10876:
10877: sub add_prefix_and_part {
10878: my ($prefix,$part)=@_;
10879: my $keyroot;
10880: if (defined($prefix) && $prefix !~ /^__/) {
10881: # prefix that has a part already
10882: $keyroot=$prefix;
10883: } elsif (defined($prefix)) {
10884: # prefix that is missing a part
10885: if (defined($part)) { $keyroot='_'.$part.substr($prefix,1); }
10886: } else {
10887: # no prefix at all
10888: if (defined($part)) { $keyroot='_'.$part; }
10889: }
10890: return $keyroot;
10891: }
10892:
10893: # ---------------------------------------------------------------- Get metadata
10894:
10895: my %metaentry;
10896: my %importedpartids;
10897: sub metadata {
10898: my ($uri,$what,$liburi,$prefix,$depthcount)=@_;
10899: $uri=&declutter($uri);
10900: # if it is a non metadata possible uri return quickly
10901: if (($uri eq '') ||
10902: (($uri =~ m|^/*adm/|) &&
10903: ($uri !~ m|^adm/includes|) && ($uri !~ m{/(smppg|bulletinboard|exttools?)$})) ||
10904: ($uri =~ m|/$|) || ($uri =~ m|/.meta$|) || ($uri =~ m{^/*uploaded/.+\.sequence$})) {
10905: return undef;
10906: }
10907: if (($uri =~ /^priv/ || $uri=~m{^home/httpd/html/priv})
10908: && &Apache::lonxml::get_state('target') =~ /^(|meta)$/) {
10909: return undef;
10910: }
10911: my $filename=$uri;
10912: $uri=~s/\.meta$//;
10913: #
10914: # Is the metadata already cached?
10915: # Look at timestamp of caching
10916: # Everything is cached by the main uri, libraries are never directly cached
10917: #
10918: if (!defined($liburi)) {
10919: my ($result,$cached)=&is_cached_new('meta',$uri);
10920: if (defined($cached)) { return $result->{':'.$what}; }
10921: }
10922: {
10923: # Imported parts would go here
10924: my %importedids=();
10925: my @origfileimportpartids=();
10926: my $importedparts=0;
10927: #
10928: # Is this a recursive call for a library?
10929: #
10930: # if (! exists($metacache{$uri})) {
10931: # $metacache{$uri}={};
10932: # }
10933: my $cachetime = 60*60;
10934: if ($liburi) {
10935: $liburi=&declutter($liburi);
10936: $filename=$liburi;
10937: } else {
10938: &devalidate_cache_new('meta',$uri);
10939: undef(%metaentry);
10940: }
10941: my %metathesekeys=();
10942: unless ($filename=~/\.meta$/) { $filename.='.meta'; }
10943: my $metastring;
10944: if ($uri =~ /^priv/ || $uri=~/home\/httpd\/html\/priv/) {
10945: my $which = &hreflocation('','/'.($liburi || $uri));
10946: $metastring =
10947: &Apache::lonnet::ssi_body($which,
10948: ('grade_target' => 'meta'));
10949: $cachetime = 1; # only want this cached in the child not long term
10950: } elsif (($uri !~ m -^(editupload)/-) &&
10951: ($uri !~ m{^/*uploaded/$match_domain/$match_courseid/docs/})) {
10952: my $file=&filelocation('',&clutter($filename));
10953: #push(@{$metaentry{$uri.'.file'}},$file);
10954: $metastring=&getfile($file);
10955: }
10956: my $parser=HTML::LCParser->new(\$metastring);
10957: my $token;
10958: undef %metathesekeys;
10959: while ($token=$parser->get_token) {
10960: if ($token->[0] eq 'S') {
10961: if (defined($token->[2]->{'package'})) {
10962: #
10963: # This is a package - get package info
10964: #
10965: my $package=$token->[2]->{'package'};
10966: my $keyroot=&add_prefix_and_part($prefix,$token->[2]->{'part'});
10967: if (defined($token->[2]->{'id'})) {
10968: $keyroot.='_'.$token->[2]->{'id'};
10969: }
10970: if ($metaentry{':packages'}) {
10971: $metaentry{':packages'}.=','.$package.$keyroot;
10972: } else {
10973: $metaentry{':packages'}=$package.$keyroot;
10974: }
10975: foreach my $pack_entry (keys(%packagetab)) {
10976: my $part=$keyroot;
10977: $part=~s/^\_//;
10978: if ($pack_entry=~/^\Q$package\E\&/ ||
10979: $pack_entry=~/^\Q$package\E_0\&/) {
10980: my ($pack,$name,$subp)=split(/\&/,$pack_entry);
10981: # ignore package.tab specified default values
10982: # here &package_tab_default() will fetch those
10983: if ($subp eq 'default') { next; }
10984: my $value=$packagetab{$pack_entry};
10985: my $unikey;
10986: if ($pack =~ /_0$/) {
10987: $unikey='parameter_0_'.$name;
10988: $part=0;
10989: } else {
10990: $unikey='parameter'.$keyroot.'_'.$name;
10991: }
10992: if ($subp eq 'display') {
10993: $value.=' [Part: '.$part.']';
10994: }
10995: $metaentry{':'.$unikey.'.part'}=$part;
10996: $metathesekeys{$unikey}=1;
10997: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
10998: $metaentry{':'.$unikey.'.'.$subp}=$value;
10999: }
11000: if (defined($metaentry{':'.$unikey.'.default'})) {
11001: $metaentry{':'.$unikey}=
11002: $metaentry{':'.$unikey.'.default'};
11003: }
11004: }
11005: }
11006: } else {
11007: #
11008: # This is not a package - some other kind of start tag
11009: #
11010: my $entry=$token->[1];
11011: my $unikey='';
11012:
11013: if ($entry eq 'import') {
11014: #
11015: # Importing a library here
11016: #
11017: my $location=$parser->get_text('/import');
11018: my $dir=$filename;
11019: $dir=~s|[^/]*$||;
11020: $location=&filelocation($dir,$location);
11021:
11022: my $importmode=$token->[2]->{'importmode'};
11023: if ($importmode eq 'problem') {
11024: # Import as problem/response
11025: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
11026: } elsif ($importmode eq 'part') {
11027: # Import as part(s)
11028: $importedparts=1;
11029: # We need to get the original file and the imported file to get the part order correct
11030: # Good news: we do not need to worry about nested libraries, since parts cannot be nested
11031: # Load and inspect original file
11032: if ($#origfileimportpartids<0) {
11033: undef(%importedpartids);
11034: my $origfilelocation=$perlvar{'lonDocRoot'}.&clutter($uri);
11035: my $origfile=&getfile($origfilelocation);
11036: @origfileimportpartids=($origfile=~/<(part|import)[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
11037: }
11038:
11039: # Load and inspect imported file
11040: my $impfile=&getfile($location);
11041: my @impfilepartids=($impfile=~/<part[^>]*id\s*=\s*[\"\']([^\"\']+)[\"\'][^>]*>/gs);
11042: if ($#impfilepartids>=0) {
11043: # This problem had parts
11044: $importedpartids{$token->[2]->{'id'}}=join(',',@impfilepartids);
11045: } else {
11046: # Importing by turning a single problem into a problem part
11047: # It gets the import-tags ID as part-ID
11048: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'id'});
11049: $importedpartids{$token->[2]->{'id'}}=$token->[2]->{'id'};
11050: }
11051: } else {
11052: # Normal import
11053: $unikey=&add_prefix_and_part($prefix,$token->[2]->{'part'});
11054: if (defined($token->[2]->{'id'})) {
11055: $unikey.='_'.$token->[2]->{'id'};
11056: }
11057: }
11058:
11059: if ($depthcount<20) {
11060: my $metadata =
11061: &metadata($uri,'keys', $location,$unikey,
11062: $depthcount+1);
11063: foreach my $meta (split(',',$metadata)) {
11064: $metaentry{':'.$meta}=$metaentry{':'.$meta};
11065: $metathesekeys{$meta}=1;
11066: }
11067:
11068: }
11069: } else {
11070: #
11071: # Not importing, some other kind of non-package, non-library start tag
11072: #
11073: $unikey=$entry.&add_prefix_and_part($prefix,$token->[2]->{'part'});
11074: if (defined($token->[2]->{'id'})) {
11075: $unikey.='_'.$token->[2]->{'id'};
11076: }
11077: if (defined($token->[2]->{'name'})) {
11078: $unikey.='_'.$token->[2]->{'name'};
11079: }
11080: $metathesekeys{$unikey}=1;
11081: foreach my $param (@{$token->[3]}) {
11082: $metaentry{':'.$unikey.'.'.$param} =
11083: $token->[2]->{$param};
11084: }
11085: my $internaltext=&HTML::Entities::decode($parser->get_text('/'.$entry));
11086: my $default=$metaentry{':'.$unikey.'.default'};
11087: if ( $internaltext =~ /^\s*$/ && $default !~ /^\s*$/) {
11088: # only ws inside the tag, and not in default, so use default
11089: # as value
11090: $metaentry{':'.$unikey}=$default;
11091: } elsif ( $internaltext =~ /\S/ ) {
11092: # something interesting inside the tag
11093: $metaentry{':'.$unikey}=$internaltext;
11094: } else {
11095: # no interesting values, don't set a default
11096: }
11097: # end of not-a-package not-a-library import
11098: }
11099: # end of not-a-package start tag
11100: }
11101: # the next is the end of "start tag"
11102: }
11103: }
11104: my ($extension) = ($uri =~ /\.(\w+)$/);
11105: $extension = lc($extension);
11106: if ($extension eq 'htm') { $extension='html'; }
11107:
11108: foreach my $key (keys(%packagetab)) {
11109: #no specific packages #how's our extension
11110: if ($key!~/^extension_\Q$extension\E&/) { next; }
11111: &metadata_create_package_def($uri,$key,'extension_'.$extension,
11112: \%metathesekeys);
11113: }
11114:
11115: if (!exists($metaentry{':packages'})
11116: || $packagetab{"import_defaults&extension_$extension"}) {
11117: foreach my $key (keys(%packagetab)) {
11118: #no specific packages well let's get default then
11119: if ($key!~/^default&/) { next; }
11120: &metadata_create_package_def($uri,$key,'default',
11121: \%metathesekeys);
11122: }
11123: }
11124: # are there custom rights to evaluate
11125: if ($metaentry{':copyright'} eq 'custom') {
11126:
11127: #
11128: # Importing a rights file here
11129: #
11130: unless ($depthcount) {
11131: my $location=$metaentry{':customdistributionfile'};
11132: my $dir=$filename;
11133: $dir=~s|[^/]*$||;
11134: $location=&filelocation($dir,$location);
11135: my $rights_metadata =
11136: &metadata($uri,'keys',$location,'_rights',
11137: $depthcount+1);
11138: foreach my $rights (split(',',$rights_metadata)) {
11139: #$metaentry{':'.$rights}=$metacache{$uri}->{':'.$rights};
11140: $metathesekeys{$rights}=1;
11141: }
11142: }
11143: }
11144: # uniqifiy package listing
11145: my %seen;
11146: my @uniq_packages =
11147: grep { ! $seen{$_} ++ } (split(',',$metaentry{':packages'}));
11148: $metaentry{':packages'} = join(',',@uniq_packages);
11149:
11150: if ($importedparts) {
11151: # We had imported parts and need to rebuild partorder
11152: $metaentry{':partorder'}='';
11153: $metathesekeys{'partorder'}=1;
11154: for (my $index=0;$index<$#origfileimportpartids;$index+=2) {
11155: if ($origfileimportpartids[$index] eq 'part') {
11156: # original part, part of the problem
11157: $metaentry{':partorder'}.=','.$origfileimportpartids[$index+1];
11158: } else {
11159: # we have imported parts at this position
11160: $metaentry{':partorder'}.=','.$importedpartids{$origfileimportpartids[$index+1]};
11161: }
11162: }
11163: $metaentry{':partorder'}=~s/^\,//;
11164: }
11165:
11166: $metaentry{':keys'} = join(',',keys(%metathesekeys));
11167: &metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
11168: $metaentry{':allpossiblekeys'}=join(',',keys(%metathesekeys));
11169: &do_cache_new('meta',$uri,\%metaentry,$cachetime);
11170: # this is the end of "was not already recently cached
11171: }
11172: return $metaentry{':'.$what};
11173: }
11174:
11175: sub metadata_create_package_def {
11176: my ($uri,$key,$package,$metathesekeys)=@_;
11177: my ($pack,$name,$subp)=split(/\&/,$key);
11178: if ($subp eq 'default') { next; }
11179:
11180: if (defined($metaentry{':packages'})) {
11181: $metaentry{':packages'}.=','.$package;
11182: } else {
11183: $metaentry{':packages'}=$package;
11184: }
11185: my $value=$packagetab{$key};
11186: my $unikey;
11187: $unikey='parameter_0_'.$name;
11188: $metaentry{':'.$unikey.'.part'}=0;
11189: $$metathesekeys{$unikey}=1;
11190: unless (defined($metaentry{':'.$unikey.'.'.$subp})) {
11191: $metaentry{':'.$unikey.'.'.$subp}=$value;
11192: }
11193: if (defined($metaentry{':'.$unikey.'.default'})) {
11194: $metaentry{':'.$unikey}=
11195: $metaentry{':'.$unikey.'.default'};
11196: }
11197: }
11198:
11199: sub metadata_generate_part0 {
11200: my ($metadata,$metacache,$uri) = @_;
11201: my %allnames;
11202: foreach my $metakey (keys(%$metadata)) {
11203: if ($metakey=~/^parameter\_(.*)/) {
11204: my $part=$$metacache{':'.$metakey.'.part'};
11205: my $name=$$metacache{':'.$metakey.'.name'};
11206: if (! exists($$metadata{'parameter_0_'.$name.'.name'})) {
11207: $allnames{$name}=$part;
11208: }
11209: }
11210: }
11211: foreach my $name (keys(%allnames)) {
11212: $$metadata{"parameter_0_$name"}=1;
11213: my $key=":parameter_0_$name";
11214: $$metacache{"$key.part"}='0';
11215: $$metacache{"$key.name"}=$name;
11216: $$metacache{"$key.type"}=$$metacache{':parameter_'.
11217: $allnames{$name}.'_'.$name.
11218: '.type'};
11219: my $olddis=$$metacache{':parameter_'.$allnames{$name}.'_'.$name.
11220: '.display'};
11221: my $expr='[Part: '.$allnames{$name}.']';
11222: $olddis=~s/\Q$expr\E/\[Part: 0\]/;
11223: $$metacache{"$key.display"}=$olddis;
11224: }
11225: }
11226:
11227: # ------------------------------------------------------ Devalidate title cache
11228:
11229: sub devalidate_title_cache {
11230: my ($url)=@_;
11231: if (!$env{'request.course.id'}) { return; }
11232: my $symb=&symbread($url);
11233: if (!$symb) { return; }
11234: my $key=$env{'request.course.id'}."\0".$symb;
11235: &devalidate_cache_new('title',$key);
11236: }
11237:
11238: # ------------------------------------------------- Get the title of a course
11239:
11240: sub current_course_title {
11241: return $env{ 'course.' . $env{'request.course.id'} . '.description' };
11242: }
11243: # ------------------------------------------------- Get the title of a resource
11244:
11245: sub gettitle {
11246: my $urlsymb=shift;
11247: my $symb=&symbread($urlsymb);
11248: if ($symb) {
11249: my $key=$env{'request.course.id'}."\0".$symb;
11250: my ($result,$cached)=&is_cached_new('title',$key);
11251: if (defined($cached)) {
11252: return $result;
11253: }
11254: my ($map,$resid,$url)=&decode_symb($symb);
11255: my $title='';
11256: if (!$map && $resid == 0 && $url =~/default\.sequence$/) {
11257: $title = $env{'course.'.$env{'request.course.id'}.'.description'};
11258: } else {
11259: if (tie(my %bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11260: &GDBM_READER(),0640)) {
11261: my $mapid=$bighash{'map_pc_'.&clutter($map)};
11262: $title=$bighash{'title_'.$mapid.'.'.$resid};
11263: untie(%bighash);
11264: }
11265: }
11266: $title=~s/\&colon\;/\:/gs;
11267: if ($title) {
11268: # Remember both $symb and $title for dynamic metadata
11269: $accesshash{$symb.'___crstitle'}=$title;
11270: $accesshash{&declutter($map).'___'.&declutter($url).'___usage'}=time;
11271: # Cache this title and then return it
11272: return &do_cache_new('title',$key,$title,600);
11273: }
11274: $urlsymb=$url;
11275: }
11276: my $title=&metadata($urlsymb,'title');
11277: if (!$title) { $title=(split('/',$urlsymb))[-1]; }
11278: return $title;
11279: }
11280:
11281: sub get_slot {
11282: my ($which,$cnum,$cdom)=@_;
11283: if (!$cnum || !$cdom) {
11284: (undef,my $courseid)=&whichuser();
11285: $cdom=$env{'course.'.$courseid.'.domain'};
11286: $cnum=$env{'course.'.$courseid.'.num'};
11287: }
11288: my $key=join("\0",'slots',$cdom,$cnum,$which);
11289: my %slotinfo;
11290: if (exists($remembered{$key})) {
11291: $slotinfo{$which} = $remembered{$key};
11292: } else {
11293: %slotinfo=&get('slots',[$which],$cdom,$cnum);
11294: &Apache::lonhomework::showhash(%slotinfo);
11295: my ($tmp)=keys(%slotinfo);
11296: if ($tmp=~/^error:/) { return (); }
11297: $remembered{$key} = $slotinfo{$which};
11298: }
11299: if (ref($slotinfo{$which}) eq 'HASH') {
11300: return %{$slotinfo{$which}};
11301: }
11302: return $slotinfo{$which};
11303: }
11304:
11305: sub get_reservable_slots {
11306: my ($cnum,$cdom,$uname,$udom) = @_;
11307: my $now = time;
11308: my $reservable_info;
11309: my $key=join("\0",'reservableslots',$cdom,$cnum,$uname,$udom);
11310: if (exists($remembered{$key})) {
11311: $reservable_info = $remembered{$key};
11312: } else {
11313: my %resv;
11314: ($resv{'now_order'},$resv{'now'},$resv{'future_order'},$resv{'future'}) =
11315: &Apache::loncommon::get_future_slots($cnum,$cdom,$now);
11316: $reservable_info = \%resv;
11317: $remembered{$key} = $reservable_info;
11318: }
11319: return $reservable_info;
11320: }
11321:
11322: sub get_course_slots {
11323: my ($cnum,$cdom) = @_;
11324: my $hashid=$cnum.':'.$cdom;
11325: my ($result,$cached) = &Apache::lonnet::is_cached_new('allslots',$hashid);
11326: if (defined($cached)) {
11327: if (ref($result) eq 'HASH') {
11328: return %{$result};
11329: }
11330: } else {
11331: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
11332: my ($tmp) = keys(%slots);
11333: if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
11334: &do_cache_new('allslots',$hashid,\%slots,600);
11335: return %slots;
11336: }
11337: }
11338: return;
11339: }
11340:
11341: sub devalidate_slots_cache {
11342: my ($cnum,$cdom)=@_;
11343: my $hashid=$cnum.':'.$cdom;
11344: &devalidate_cache_new('allslots',$hashid);
11345: }
11346:
11347: sub get_coursechange {
11348: my ($cdom,$cnum) = @_;
11349: if ($cdom eq '' || $cnum eq '') {
11350: return unless ($env{'request.course.id'});
11351: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
11352: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
11353: }
11354: my $hashid=$cdom.'_'.$cnum;
11355: my ($change,$cached)=&is_cached_new('crschange',$hashid);
11356: if ((defined($cached)) && ($change ne '')) {
11357: return $change;
11358: } else {
11359: my %crshash;
11360: %crshash = &get('environment',['internal.contentchange'],$cdom,$cnum);
11361: if ($crshash{'internal.contentchange'} eq '') {
11362: $change = $env{'course.'.$cdom.'_'.$cnum.'.internal.created'};
11363: if ($change eq '') {
11364: %crshash = &get('environment',['internal.created'],$cdom,$cnum);
11365: $change = $crshash{'internal.created'};
11366: }
11367: } else {
11368: $change = $crshash{'internal.contentchange'};
11369: }
11370: my $cachetime = 600;
11371: &do_cache_new('crschange',$hashid,$change,$cachetime);
11372: }
11373: return $change;
11374: }
11375:
11376: sub devalidate_coursechange_cache {
11377: my ($cnum,$cdom)=@_;
11378: my $hashid=$cnum.':'.$cdom;
11379: &devalidate_cache_new('crschange',$hashid);
11380: }
11381:
11382: # ------------------------------------------------- Update symbolic store links
11383:
11384: sub symblist {
11385: my ($mapname,%newhash)=@_;
11386: $mapname=&deversion(&declutter($mapname));
11387: my %hash;
11388: if (($env{'request.course.fn'}) && (%newhash)) {
11389: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
11390: &GDBM_WRCREAT(),0640)) {
11391: foreach my $url (keys(%newhash)) {
11392: next if ($url eq 'last_known'
11393: && $env{'form.no_update_last_known'});
11394: $hash{declutter($url)}=&encode_symb($mapname,
11395: $newhash{$url}->[1],
11396: $newhash{$url}->[0]);
11397: }
11398: if (untie(%hash)) {
11399: return 'ok';
11400: }
11401: }
11402: }
11403: return 'error';
11404: }
11405:
11406: # --------------------------------------------------------------- Verify a symb
11407:
11408: sub symbverify {
11409: my ($symb,$thisurl,$encstate)=@_;
11410: my $thisfn=$thisurl;
11411: $thisfn=&declutter($thisfn);
11412: # direct jump to resource in page or to a sequence - will construct own symbs
11413: if ($thisfn=~/\.(page|sequence)$/) { return 1; }
11414: # check URL part
11415: my ($map,$resid,$url)=&decode_symb($symb);
11416:
11417: unless ($url eq $thisfn) { return 0; }
11418:
11419: $symb=&symbclean($symb);
11420: $thisurl=&deversion($thisurl);
11421: $thisfn=&deversion($thisfn);
11422:
11423: my %bighash;
11424: my $okay=0;
11425:
11426: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11427: &GDBM_READER(),0640)) {
11428: my $noclutter;
11429: if (($thisurl =~ m{^/adm/wrapper/ext/}) || ($thisurl =~ m{^ext/})) {
11430: $thisurl =~ s/\?.+$//;
11431: if ($map =~ m{^uploaded/.+\.page$}) {
11432: $thisurl =~ s{^(/adm/wrapper|)/ext/}{http://};
11433: $thisurl =~ s{^\Qhttp://https://\E}{https://};
11434: $noclutter = 1;
11435: }
11436: }
11437: my $ids;
11438: if ($noclutter) {
11439: $ids=$bighash{'ids_'.$thisurl};
11440: } else {
11441: $ids=$bighash{'ids_'.&clutter($thisurl)};
11442: }
11443: unless ($ids) {
11444: my $idkey = 'ids_'.($thisurl =~ m{^/}? '' : '/').$thisurl;
11445: $ids=$bighash{$idkey};
11446: }
11447: if ($ids) {
11448: # ------------------------------------------------------------------- Has ID(s)
11449: if ($thisfn =~ m{^/adm/wrapper/ext/}) {
11450: $symb =~ s/\?.+$//;
11451: }
11452: foreach my $id (split(/\,/,$ids)) {
11453: my ($mapid,$resid)=split(/\./,$id);
11454: if (
11455: &symbclean(&declutter($bighash{'map_id_'.$mapid}).'___'.$resid.'___'.$thisfn)
11456: eq $symb) {
11457: if (ref($encstate)) {
11458: $$encstate = $bighash{'encrypted_'.$id};
11459: }
11460: if (($env{'request.role.adv'}) ||
11461: ($bighash{'encrypted_'.$id} eq $env{'request.enc'}) ||
11462: ($thisurl eq '/adm/navmaps')) {
11463: $okay=1;
11464: last;
11465: }
11466: }
11467: }
11468: }
11469: untie(%bighash);
11470: }
11471: return $okay;
11472: }
11473:
11474: # --------------------------------------------------------------- Clean-up symb
11475:
11476: sub symbclean {
11477: my $symb=shift;
11478: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
11479: # remove version from map
11480: $symb=~s/\.(\d+)\.(\w+)\_\_\_/\.$2\_\_\_/;
11481:
11482: # remove version from URL
11483: $symb=~s/\.(\d+)\.(\w+)$/\.$2/;
11484:
11485: # remove wrapper
11486:
11487: $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
11488: $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
11489: return $symb;
11490: }
11491:
11492: # ---------------------------------------------- Split symb to find map and url
11493:
11494: sub encode_symb {
11495: my ($map,$resid,$url)=@_;
11496: return &symbclean(&declutter($map).'___'.$resid.'___'.&declutter($url));
11497: }
11498:
11499: sub decode_symb {
11500: my $symb=shift;
11501: if ($symb=~m|^/enc/|) { $symb=&Apache::lonenc::unencrypted($symb); }
11502: my ($map,$resid,$url)=split(/___/,$symb);
11503: return (&fixversion($map),$resid,&fixversion($url));
11504: }
11505:
11506: sub fixversion {
11507: my $fn=shift;
11508: if ($fn=~/^(adm|uploaded|editupload|public)/) { return $fn; }
11509: my %bighash;
11510: my $uri=&clutter($fn);
11511: my $key=$env{'request.course.id'}.'_'.$uri;
11512: # is this cached?
11513: my ($result,$cached)=&is_cached_new('courseresversion',$key);
11514: if (defined($cached)) { return $result; }
11515: # unfortunately not cached, or expired
11516: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11517: &GDBM_READER(),0640)) {
11518: if ($bighash{'version_'.$uri}) {
11519: my $version=$bighash{'version_'.$uri};
11520: unless (($version eq 'mostrecent') ||
11521: ($version==&getversion($uri))) {
11522: $uri=~s/\.(\w+)$/\.$version\.$1/;
11523: }
11524: }
11525: untie %bighash;
11526: }
11527: return &do_cache_new('courseresversion',$key,&declutter($uri),600);
11528: }
11529:
11530: sub deversion {
11531: my $url=shift;
11532: $url=~s/\.\d+\.(\w+)$/\.$1/;
11533: return $url;
11534: }
11535:
11536: # ------------------------------------------------------ Return symb list entry
11537:
11538: sub symbread {
11539: my ($thisfn,$donotrecurse,$ignorecachednull,$checkforblock,$possibles)=@_;
11540: my $cache_str='request.symbread.cached.'.$thisfn;
11541: if (defined($env{$cache_str})) {
11542: if ($ignorecachednull) {
11543: return $env{$cache_str} unless ($env{$cache_str} eq '');
11544: } else {
11545: return $env{$cache_str};
11546: }
11547: }
11548: # no filename provided? try from environment
11549: unless ($thisfn) {
11550: if ($env{'request.symb'}) {
11551: return $env{$cache_str}=&symbclean($env{'request.symb'});
11552: }
11553: $thisfn=$env{'request.filename'};
11554: }
11555: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
11556: # is that filename actually a symb? Verify, clean, and return
11557: if ($thisfn=~/\_\_\_\d+\_\_\_(.*)$/) {
11558: if (&symbverify($thisfn,$1)) {
11559: return $env{$cache_str}=&symbclean($thisfn);
11560: }
11561: }
11562: $thisfn=declutter($thisfn);
11563: my %hash;
11564: my %bighash;
11565: my $syval='';
11566: if (($env{'request.course.fn'}) && ($thisfn)) {
11567: my $targetfn = $thisfn;
11568: if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
11569: $targetfn = 'adm/wrapper/'.$thisfn;
11570: }
11571: if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
11572: $targetfn=$1;
11573: }
11574: if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
11575: &GDBM_READER(),0640)) {
11576: $syval=$hash{$targetfn};
11577: untie(%hash);
11578: }
11579: # ---------------------------------------------------------- There was an entry
11580: if ($syval) {
11581: #unless ($syval=~/\_\d+$/) {
11582: #unless ($env{'form.request.prefix'}=~/\.(\d+)\_$/) {
11583: #&appenv({'request.ambiguous' => $thisfn});
11584: #return $env{$cache_str}='';
11585: #}
11586: #$syval.=$1;
11587: #}
11588: } else {
11589: # ------------------------------------------------------- Was not in symb table
11590: if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db',
11591: &GDBM_READER(),0640)) {
11592: # ---------------------------------------------- Get ID(s) for current resource
11593: my $ids=$bighash{'ids_'.&clutter($thisfn)};
11594: unless ($ids) {
11595: $ids=$bighash{'ids_/'.$thisfn};
11596: }
11597: unless ($ids) {
11598: # alias?
11599: $ids=$bighash{'mapalias_'.$thisfn};
11600: }
11601: if ($ids) {
11602: # ------------------------------------------------------------------- Has ID(s)
11603: my @possibilities=split(/\,/,$ids);
11604: if ($#possibilities==0) {
11605: # ----------------------------------------------- There is only one possibility
11606: my ($mapid,$resid)=split(/\./,$ids);
11607: $syval=&encode_symb($bighash{'map_id_'.$mapid},
11608: $resid,$thisfn);
11609: if (ref($possibles) eq 'HASH') {
11610: $possibles->{$syval} = 1;
11611: }
11612: if ($checkforblock) {
11613: my @blockers = &has_comm_blocking('bre',$syval,$bighash{'src_'.$ids});
11614: if (@blockers) {
11615: $syval = '';
11616: return;
11617: }
11618: }
11619: } elsif ((!$donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
11620: # ------------------------------------------ There is more than one possibility
11621: my $realpossible=0;
11622: foreach my $id (@possibilities) {
11623: my $file=$bighash{'src_'.$id};
11624: my $canaccess;
11625: if (($donotrecurse) || ($checkforblock) || (ref($possibles) eq 'HASH')) {
11626: $canaccess = 1;
11627: } else {
11628: $canaccess = &allowed('bre',$file);
11629: }
11630: if ($canaccess) {
11631: my ($mapid,$resid)=split(/\./,$id);
11632: if ($bighash{'map_type_'.$mapid} ne 'page') {
11633: my $poss_syval=&encode_symb($bighash{'map_id_'.$mapid},
11634: $resid,$thisfn);
11635: if (ref($possibles) eq 'HASH') {
11636: $possibles->{$syval} = 1;
11637: }
11638: if ($checkforblock) {
11639: my @blockers = &has_comm_blocking('bre',$poss_syval,$file);
11640: unless (@blockers > 0) {
11641: $syval = $poss_syval;
11642: $realpossible++;
11643: }
11644: } else {
11645: $syval = $poss_syval;
11646: $realpossible++;
11647: }
11648: }
11649: }
11650: }
11651: if ($realpossible!=1) { $syval=''; }
11652: } else {
11653: $syval='';
11654: }
11655: }
11656: untie(%bighash);
11657: }
11658: }
11659: if ($syval) {
11660: return $env{$cache_str}=$syval;
11661: }
11662: }
11663: &appenv({'request.ambiguous' => $thisfn});
11664: return $env{$cache_str}='';
11665: }
11666:
11667: # ---------------------------------------------------------- Return random seed
11668:
11669: sub numval {
11670: my $txt=shift;
11671: $txt=~tr/A-J/0-9/;
11672: $txt=~tr/a-j/0-9/;
11673: $txt=~tr/K-T/0-9/;
11674: $txt=~tr/k-t/0-9/;
11675: $txt=~tr/U-Z/0-5/;
11676: $txt=~tr/u-z/0-5/;
11677: $txt=~s/\D//g;
11678: if ($_64bit) { if ($txt > 2**32) { return -1; } }
11679: return int($txt);
11680: }
11681:
11682: sub numval2 {
11683: my $txt=shift;
11684: $txt=~tr/A-J/0-9/;
11685: $txt=~tr/a-j/0-9/;
11686: $txt=~tr/K-T/0-9/;
11687: $txt=~tr/k-t/0-9/;
11688: $txt=~tr/U-Z/0-5/;
11689: $txt=~tr/u-z/0-5/;
11690: $txt=~s/\D//g;
11691: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
11692: my $total;
11693: foreach my $val (@txts) { $total+=$val; }
11694: if ($_64bit) { if ($total > 2**32) { return -1; } }
11695: return int($total);
11696: }
11697:
11698: sub numval3 {
11699: use integer;
11700: my $txt=shift;
11701: $txt=~tr/A-J/0-9/;
11702: $txt=~tr/a-j/0-9/;
11703: $txt=~tr/K-T/0-9/;
11704: $txt=~tr/k-t/0-9/;
11705: $txt=~tr/U-Z/0-5/;
11706: $txt=~tr/u-z/0-5/;
11707: $txt=~s/\D//g;
11708: my @txts=split(/(\d\d\d\d\d\d\d\d\d)/,$txt);
11709: my $total;
11710: foreach my $val (@txts) { $total+=$val; }
11711: if ($_64bit) { $total=(($total<<32)>>32); }
11712: return $total;
11713: }
11714:
11715: sub digest {
11716: my ($data)=@_;
11717: my $digest=&Digest::MD5::md5($data);
11718: my ($a,$b,$c,$d)=unpack("iiii",$digest);
11719: my ($e,$f);
11720: {
11721: use integer;
11722: $e=($a+$b);
11723: $f=($c+$d);
11724: if ($_64bit) {
11725: $e=(($e<<32)>>32);
11726: $f=(($f<<32)>>32);
11727: }
11728: }
11729: if (wantarray) {
11730: return ($e,$f);
11731: } else {
11732: my $g;
11733: {
11734: use integer;
11735: $g=($e+$f);
11736: if ($_64bit) {
11737: $g=(($g<<32)>>32);
11738: }
11739: }
11740: return $g;
11741: }
11742: }
11743:
11744: sub latest_rnd_algorithm_id {
11745: return '64bit5';
11746: }
11747:
11748: sub get_rand_alg {
11749: my ($courseid)=@_;
11750: if (!$courseid) { $courseid=(&whichuser())[1]; }
11751: if ($courseid) {
11752: return $env{"course.$courseid.rndseed"};
11753: }
11754: return &latest_rnd_algorithm_id();
11755: }
11756:
11757: sub validCODE {
11758: my ($CODE)=@_;
11759: if (defined($CODE) && $CODE ne '' && $CODE =~ /^\w+$/) { return 1; }
11760: return 0;
11761: }
11762:
11763: sub getCODE {
11764: if (&validCODE($env{'form.CODE'})) { return $env{'form.CODE'}; }
11765: if ( (defined($Apache::lonhomework::parsing_a_problem) ||
11766: defined($Apache::lonhomework::parsing_a_task) ) &&
11767: &validCODE($Apache::lonhomework::history{'resource.CODE'})) {
11768: return $Apache::lonhomework::history{'resource.CODE'};
11769: }
11770: return undef;
11771: }
11772: #
11773: # Determines the random seed for a specific context:
11774: #
11775: # parameters:
11776: # symb - in course context the symb for the seed.
11777: # course_id - The course id of the form domain_coursenum.
11778: # domain - Domain for the user.
11779: # course - Course for the user.
11780: # cenv - environment of the course.
11781: #
11782: # NOTE:
11783: # All parameters are picked out of the environment if missing
11784: # or not defined.
11785: # If a symb cannot be determined the current time is used instead.
11786: #
11787: # For a given well defined symb, courside, domain, username,
11788: # and course environment, the seed is reproducible.
11789: #
11790: sub rndseed {
11791: my ($symb,$courseid,$domain,$username, $cenv)=@_;
11792: my ($wsymb,$wcourseid,$wdomain,$wusername)=&whichuser();
11793: if (!defined($symb)) {
11794: unless ($symb=$wsymb) { return time; }
11795: }
11796: if (!defined $courseid) {
11797: $courseid=$wcourseid;
11798: }
11799: if (!defined $domain) { $domain=$wdomain; }
11800: if (!defined $username) { $username=$wusername }
11801:
11802: my $which;
11803: if (defined($cenv->{'rndseed'})) {
11804: $which = $cenv->{'rndseed'};
11805: } else {
11806: $which =&get_rand_alg($courseid);
11807: }
11808: if (defined(&getCODE())) {
11809:
11810: if ($which eq '64bit5') {
11811: return &rndseed_CODE_64bit5($symb,$courseid,$domain,$username);
11812: } elsif ($which eq '64bit4') {
11813: return &rndseed_CODE_64bit4($symb,$courseid,$domain,$username);
11814: } else {
11815: return &rndseed_CODE_64bit($symb,$courseid,$domain,$username);
11816: }
11817: } elsif ($which eq '64bit5') {
11818: return &rndseed_64bit5($symb,$courseid,$domain,$username);
11819: } elsif ($which eq '64bit4') {
11820: return &rndseed_64bit4($symb,$courseid,$domain,$username);
11821: } elsif ($which eq '64bit3') {
11822: return &rndseed_64bit3($symb,$courseid,$domain,$username);
11823: } elsif ($which eq '64bit2') {
11824: return &rndseed_64bit2($symb,$courseid,$domain,$username);
11825: } elsif ($which eq '64bit') {
11826: return &rndseed_64bit($symb,$courseid,$domain,$username);
11827: }
11828: return &rndseed_32bit($symb,$courseid,$domain,$username);
11829: }
11830:
11831: sub rndseed_32bit {
11832: my ($symb,$courseid,$domain,$username)=@_;
11833: {
11834: use integer;
11835: my $symbchck=unpack("%32C*",$symb) << 27;
11836: my $symbseed=numval($symb) << 22;
11837: my $namechck=unpack("%32C*",$username) << 17;
11838: my $nameseed=numval($username) << 12;
11839: my $domainseed=unpack("%32C*",$domain) << 7;
11840: my $courseseed=unpack("%32C*",$courseid);
11841: my $num=$symbseed+$nameseed+$domainseed+$courseseed+$namechck+$symbchck;
11842: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11843: #&logthis("rndseed :$num:$symb");
11844: if ($_64bit) { $num=(($num<<32)>>32); }
11845: return $num;
11846: }
11847: }
11848:
11849: sub rndseed_64bit {
11850: my ($symb,$courseid,$domain,$username)=@_;
11851: {
11852: use integer;
11853: my $symbchck=unpack("%32S*",$symb) << 21;
11854: my $symbseed=numval($symb) << 10;
11855: my $namechck=unpack("%32S*",$username);
11856:
11857: my $nameseed=numval($username) << 21;
11858: my $domainseed=unpack("%32S*",$domain) << 10;
11859: my $courseseed=unpack("%32S*",$courseid);
11860:
11861: my $num1=$symbchck+$symbseed+$namechck;
11862: my $num2=$nameseed+$domainseed+$courseseed;
11863: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11864: #&logthis("rndseed :$num:$symb");
11865: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11866: return "$num1,$num2";
11867: }
11868: }
11869:
11870: sub rndseed_64bit2 {
11871: my ($symb,$courseid,$domain,$username)=@_;
11872: {
11873: use integer;
11874: # strings need to be an even # of cahracters long, it it is odd the
11875: # last characters gets thrown away
11876: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11877: my $symbseed=numval($symb) << 10;
11878: my $namechck=unpack("%32S*",$username.' ');
11879:
11880: my $nameseed=numval($username) << 21;
11881: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11882: my $courseseed=unpack("%32S*",$courseid.' ');
11883:
11884: my $num1=$symbchck+$symbseed+$namechck;
11885: my $num2=$nameseed+$domainseed+$courseseed;
11886: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11887: #&logthis("rndseed :$num:$symb");
11888: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11889: return "$num1,$num2";
11890: }
11891: }
11892:
11893: sub rndseed_64bit3 {
11894: my ($symb,$courseid,$domain,$username)=@_;
11895: {
11896: use integer;
11897: # strings need to be an even # of cahracters long, it it is odd the
11898: # last characters gets thrown away
11899: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11900: my $symbseed=numval2($symb) << 10;
11901: my $namechck=unpack("%32S*",$username.' ');
11902:
11903: my $nameseed=numval2($username) << 21;
11904: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11905: my $courseseed=unpack("%32S*",$courseid.' ');
11906:
11907: my $num1=$symbchck+$symbseed+$namechck;
11908: my $num2=$nameseed+$domainseed+$courseseed;
11909: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11910: #&logthis("rndseed :$num1:$num2:$_64bit");
11911: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11912:
11913: return "$num1:$num2";
11914: }
11915: }
11916:
11917: sub rndseed_64bit4 {
11918: my ($symb,$courseid,$domain,$username)=@_;
11919: {
11920: use integer;
11921: # strings need to be an even # of cahracters long, it it is odd the
11922: # last characters gets thrown away
11923: my $symbchck=unpack("%32S*",$symb.' ') << 21;
11924: my $symbseed=numval3($symb) << 10;
11925: my $namechck=unpack("%32S*",$username.' ');
11926:
11927: my $nameseed=numval3($username) << 21;
11928: my $domainseed=unpack("%32S*",$domain.' ') << 10;
11929: my $courseseed=unpack("%32S*",$courseid.' ');
11930:
11931: my $num1=$symbchck+$symbseed+$namechck;
11932: my $num2=$nameseed+$domainseed+$courseseed;
11933: #&logthis("$symbseed:$nameseed;$domainseed|$courseseed;$namechck:$symbchck");
11934: #&logthis("rndseed :$num1:$num2:$_64bit");
11935: if ($_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
11936:
11937: return "$num1:$num2";
11938: }
11939: }
11940:
11941: sub rndseed_64bit5 {
11942: my ($symb,$courseid,$domain,$username)=@_;
11943: my ($num1,$num2)=&digest("$symb,$courseid,$domain,$username");
11944: return "$num1:$num2";
11945: }
11946:
11947: sub rndseed_CODE_64bit {
11948: my ($symb,$courseid,$domain,$username)=@_;
11949: {
11950: use integer;
11951: my $symbchck=unpack("%32S*",$symb.' ') << 16;
11952: my $symbseed=numval2($symb);
11953: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
11954: my $CODEseed=numval(&getCODE());
11955: my $courseseed=unpack("%32S*",$courseid.' ');
11956: my $num1=$symbseed+$CODEchck;
11957: my $num2=$CODEseed+$courseseed+$symbchck;
11958: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
11959: #&logthis("rndseed :$num1:$num2:$symb");
11960: if ($_64bit) { $num1=(($num1<<32)>>32); }
11961: if ($_64bit) { $num2=(($num2<<32)>>32); }
11962: return "$num1:$num2";
11963: }
11964: }
11965:
11966: sub rndseed_CODE_64bit4 {
11967: my ($symb,$courseid,$domain,$username)=@_;
11968: {
11969: use integer;
11970: my $symbchck=unpack("%32S*",$symb.' ') << 16;
11971: my $symbseed=numval3($symb);
11972: my $CODEchck=unpack("%32S*",&getCODE().' ') << 16;
11973: my $CODEseed=numval3(&getCODE());
11974: my $courseseed=unpack("%32S*",$courseid.' ');
11975: my $num1=$symbseed+$CODEchck;
11976: my $num2=$CODEseed+$courseseed+$symbchck;
11977: #&logthis("$symbseed:$CODEchck|$CODEseed:$courseseed:$symbchck");
11978: #&logthis("rndseed :$num1:$num2:$symb");
11979: if ($_64bit) { $num1=(($num1<<32)>>32); }
11980: if ($_64bit) { $num2=(($num2<<32)>>32); }
11981: return "$num1:$num2";
11982: }
11983: }
11984:
11985: sub rndseed_CODE_64bit5 {
11986: my ($symb,$courseid,$domain,$username)=@_;
11987: my $code = &getCODE();
11988: my ($num1,$num2)=&digest("$symb,$courseid,$code");
11989: return "$num1:$num2";
11990: }
11991:
11992: sub setup_random_from_rndseed {
11993: my ($rndseed)=@_;
11994: if ($rndseed =~/([,:])/) {
11995: my ($num1,$num2) = map { abs($_); } (split(/[,:]/,$rndseed));
11996: if ((!$num1) || (!$num2) || ($num1 > 2147483562) || ($num2 > 2147483398)) {
11997: &Math::Random::random_set_seed_from_phrase($rndseed);
11998: } else {
11999: &Math::Random::random_set_seed($num1,$num2);
12000: }
12001: } else {
12002: &Math::Random::random_set_seed_from_phrase($rndseed);
12003: }
12004: }
12005:
12006: sub latest_receipt_algorithm_id {
12007: return 'receipt3';
12008: }
12009:
12010: sub recunique {
12011: my $fucourseid=shift;
12012: my $unique;
12013: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2' ||
12014: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
12015: $unique=$env{"course.$fucourseid.internal.encseed"};
12016: } else {
12017: $unique=$perlvar{'lonReceipt'};
12018: }
12019: return unpack("%32C*",$unique);
12020: }
12021:
12022: sub recprefix {
12023: my $fucourseid=shift;
12024: my $prefix;
12025: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2'||
12026: $env{"course.$fucourseid.receiptalg"} eq 'receipt3' ) {
12027: $prefix=$env{"course.$fucourseid.internal.encpref"};
12028: } else {
12029: $prefix=$perlvar{'lonHostID'};
12030: }
12031: return unpack("%32C*",$prefix);
12032: }
12033:
12034: sub ireceipt {
12035: my ($funame,$fudom,$fucourseid,$fusymb,$part)=@_;
12036:
12037: my $return =&recprefix($fucourseid).'-';
12038:
12039: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt3' ||
12040: $env{'request.state'} eq 'construct') {
12041: $return .= (&digest("$funame,$fudom,$fucourseid,$fusymb,$part")%10000);
12042: return $return;
12043: }
12044:
12045: my $cuname=unpack("%32C*",$funame);
12046: my $cudom=unpack("%32C*",$fudom);
12047: my $cucourseid=unpack("%32C*",$fucourseid);
12048: my $cusymb=unpack("%32C*",$fusymb);
12049: my $cunique=&recunique($fucourseid);
12050: my $cpart=unpack("%32S*",$part);
12051: if ($env{"course.$fucourseid.receiptalg"} eq 'receipt2') {
12052:
12053: #&logthis("doing receipt2 using parts $cpart, uname $cuname and udom $cudom gets ".($cpart%$cuname)." and ".($cpart%$cudom));
12054:
12055: $return.= ($cunique%$cuname+
12056: $cunique%$cudom+
12057: $cusymb%$cuname+
12058: $cusymb%$cudom+
12059: $cucourseid%$cuname+
12060: $cucourseid%$cudom+
12061: $cpart%$cuname+
12062: $cpart%$cudom);
12063: } else {
12064: $return.= ($cunique%$cuname+
12065: $cunique%$cudom+
12066: $cusymb%$cuname+
12067: $cusymb%$cudom+
12068: $cucourseid%$cuname+
12069: $cucourseid%$cudom);
12070: }
12071: return $return;
12072: }
12073:
12074: sub receipt {
12075: my ($part)=@_;
12076: my ($symb,$courseid,$domain,$name) = &whichuser();
12077: return &ireceipt($name,$domain,$courseid,$symb,$part);
12078: }
12079:
12080: sub whichuser {
12081: my ($passedsymb)=@_;
12082: my ($symb,$courseid,$domain,$name,$publicuser);
12083: if (defined($env{'form.grade_symb'})) {
12084: my ($tmp_courseid)=&get_env_multiple('form.grade_courseid');
12085: my $allowed=&allowed('vgr',$tmp_courseid);
12086: if (!$allowed &&
12087: exists($env{'request.course.sec'}) &&
12088: $env{'request.course.sec'} !~ /^\s*$/) {
12089: $allowed=&allowed('vgr',$tmp_courseid.
12090: '/'.$env{'request.course.sec'});
12091: }
12092: if ($allowed) {
12093: ($symb)=&get_env_multiple('form.grade_symb');
12094: $courseid=$tmp_courseid;
12095: ($domain)=&get_env_multiple('form.grade_domain');
12096: ($name)=&get_env_multiple('form.grade_username');
12097: return ($symb,$courseid,$domain,$name,$publicuser);
12098: }
12099: }
12100: if (!$passedsymb) {
12101: $symb=&symbread();
12102: } else {
12103: $symb=$passedsymb;
12104: }
12105: $courseid=$env{'request.course.id'};
12106: $domain=$env{'user.domain'};
12107: $name=$env{'user.name'};
12108: if ($name eq 'public' && $domain eq 'public') {
12109: if (!defined($env{'form.username'})) {
12110: $env{'form.username'}.=time.rand(10000000);
12111: }
12112: $name.=$env{'form.username'};
12113: }
12114: return ($symb,$courseid,$domain,$name,$publicuser);
12115:
12116: }
12117:
12118: # ------------------------------------------------------------ Serves up a file
12119: # returns either the contents of the file or
12120: # -1 if the file doesn't exist
12121: #
12122: # if the target is a file that was uploaded via DOCS,
12123: # a check will be made to see if a current copy exists on the local server,
12124: # if it does this will be served, otherwise a copy will be retrieved from
12125: # the home server for the course and stored in /home/httpd/html/userfiles on
12126: # the local server.
12127:
12128: sub getfile {
12129: my ($file) = @_;
12130: if ($file =~ m -^/*(uploaded|editupload)/-) { $file=&filelocation("",$file); }
12131: &repcopy($file);
12132: return &readfile($file);
12133: }
12134:
12135: sub repcopy_userfile {
12136: my ($file)=@_;
12137: my $londocroot = $perlvar{'lonDocRoot'};
12138: if ($file =~ m{^/*(uploaded|editupload)/}) { $file=&filelocation("",$file); }
12139: if ($file =~ m{^\Q/home/httpd/lonUsers/\E}) { return 'ok'; }
12140: my ($cdom,$cnum,$filename) =
12141: ($file=~m|^\Q$perlvar{'lonDocRoot'}\E/+userfiles/+($match_domain)/+($match_name)/+(.*)|);
12142: my $uri="/uploaded/$cdom/$cnum/$filename";
12143: if (-e "$file") {
12144: # we already have a local copy, check it out
12145: my @fileinfo = stat($file);
12146: my $rtncode;
12147: my $info;
12148: my $lwpresp = &getuploaded('HEAD',$uri,$cdom,$cnum,\$info,\$rtncode);
12149: if ($lwpresp ne 'ok') {
12150: # there is no such file anymore, even though we had a local copy
12151: if ($rtncode eq '404') {
12152: unlink($file);
12153: }
12154: return -1;
12155: }
12156: if ($info < $fileinfo[9]) {
12157: # nice, the file we have is up-to-date, just say okay
12158: return 'ok';
12159: } else {
12160: # the file is outdated, get rid of it
12161: unlink($file);
12162: }
12163: }
12164: # one way or the other, at this point, we don't have the file
12165: # construct the correct path for the file
12166: my @parts = ($cdom,$cnum);
12167: if ($filename =~ m|^(.+)/[^/]+$|) {
12168: push @parts, split(/\//,$1);
12169: }
12170: my $path = $perlvar{'lonDocRoot'}.'/userfiles';
12171: foreach my $part (@parts) {
12172: $path .= '/'.$part;
12173: if (!-e $path) {
12174: mkdir($path,0770);
12175: }
12176: }
12177: # now the path exists for sure
12178: # get a user agent
12179: my $ua=new LWP::UserAgent;
12180: my $transferfile=$file.'.in.transfer';
12181: # FIXME: this should flock
12182: if (-e $transferfile) { return 'ok'; }
12183: my $request;
12184: $uri=~s/^\///;
12185: my $homeserver = &homeserver($cnum,$cdom);
12186: my $protocol = $protocol{$homeserver};
12187: $protocol = 'http' if ($protocol ne 'https');
12188: $request=new HTTP::Request('GET',$protocol.'://'.&hostname($homeserver).'/raw/'.$uri);
12189: my $response=$ua->request($request,$transferfile);
12190: # did it work?
12191: if ($response->is_error()) {
12192: unlink($transferfile);
12193: &logthis("Userfile repcopy failed for $uri");
12194: return -1;
12195: }
12196: # worked, rename the transfer file
12197: rename($transferfile,$file);
12198: return 'ok';
12199: }
12200:
12201: sub tokenwrapper {
12202: my $uri=shift;
12203: $uri=~s|^https?\://([^/]+)||;
12204: $uri=~s|^/||;
12205: $env{'user.environment'}=~/\/([^\/]+)\.id/;
12206: my $token=$1;
12207: my (undef,$udom,$uname,$file)=split('/',$uri,4);
12208: if ($udom && $uname && $file) {
12209: $file=~s|(\?\.*)*$||;
12210: &appenv({"userfile.$udom/$uname/$file" => $env{'request.course.id'}});
12211: my $homeserver = &homeserver($uname,$udom);
12212: my $protocol = $protocol{$homeserver};
12213: $protocol = 'http' if ($protocol ne 'https');
12214: return $protocol.'://'.&hostname($homeserver).'/'.$uri.
12215: (($uri=~/\?/)?'&':'?').'token='.$token.
12216: '&tokenissued='.$perlvar{'lonHostID'};
12217: } else {
12218: return '/adm/notfound.html';
12219: }
12220: }
12221:
12222: # call with reqtype HEAD: get last modification time
12223: # call with reqtype GET: get the file contents
12224: # Do not call this with reqtype GET for large files! It loads everything into memory
12225: #
12226: sub getuploaded {
12227: my ($reqtype,$uri,$cdom,$cnum,$info,$rtncode) = @_;
12228: $uri=~s/^\///;
12229: my $homeserver = &homeserver($cnum,$cdom);
12230: my $protocol = $protocol{$homeserver};
12231: $protocol = 'http' if ($protocol ne 'https');
12232: $uri = $protocol.'://'.&hostname($homeserver).'/raw/'.$uri;
12233: my $ua=new LWP::UserAgent;
12234: my $request=new HTTP::Request($reqtype,$uri);
12235: my $response=$ua->request($request);
12236: $$rtncode = $response->code;
12237: if (! $response->is_success()) {
12238: return 'failed';
12239: }
12240: if ($reqtype eq 'HEAD') {
12241: $$info = &HTTP::Date::str2time( $response->header('Last-modified') );
12242: } elsif ($reqtype eq 'GET') {
12243: $$info = $response->content;
12244: }
12245: return 'ok';
12246: }
12247:
12248: sub readfile {
12249: my $file = shift;
12250: if ( (! -e $file ) || ($file eq '') ) { return -1; };
12251: my $fh;
12252: open($fh,"<$file");
12253: my $a='';
12254: while (my $line = <$fh>) { $a .= $line; }
12255: return $a;
12256: }
12257:
12258: sub filelocation {
12259: my ($dir,$file) = @_;
12260: my $location;
12261: $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
12262:
12263: if ($file =~ m-^/adm/-) {
12264: $file=~s-^/adm/wrapper/-/-;
12265: $file=~s-^/adm/coursedocs/showdoc/-/-;
12266: }
12267:
12268: if ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
12269: $location = $file;
12270: } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
12271: my ($udom,$uname,$filename)=
12272: ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
12273: my $home=&homeserver($uname,$udom);
12274: my $is_me=0;
12275: my @ids=¤t_machine_ids();
12276: foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
12277: if ($is_me) {
12278: $location=propath($udom,$uname).'/userfiles/'.$filename;
12279: } else {
12280: $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
12281: $udom.'/'.$uname.'/'.$filename;
12282: }
12283: } elsif ($file =~ m-^/adm/-) {
12284: $location = $perlvar{'lonDocRoot'}.'/'.$file;
12285: } else {
12286: $file=~s/^\Q$perlvar{'lonDocRoot'}\E//;
12287: $file=~s:^/(res|priv)/:/:;
12288: my $space=$1;
12289: if ( !( $file =~ m:^/:) ) {
12290: $location = $dir. '/'.$file;
12291: } else {
12292: $location = $perlvar{'lonDocRoot'}.'/'.$space.$file;
12293: }
12294: }
12295: $location=~s://+:/:g; # remove duplicate /
12296: while ($location=~m{/\.\./}) {
12297: if ($location =~ m{/[^/]+/\.\./}) {
12298: $location=~ s{/[^/]+/\.\./}{/}g;
12299: } else {
12300: $location=~ s{/\.\./}{/}g;
12301: }
12302: } #remove dir/..
12303: while ($location=~m:/\./:) {$location=~ s:/\./:/:g;} #remove /./
12304: return $location;
12305: }
12306:
12307: sub hreflocation {
12308: my ($dir,$file)=@_;
12309: unless (($file=~m-^https?\://-i) || ($file=~m-^/-)) {
12310: $file=filelocation($dir,$file);
12311: } elsif ($file=~m-^/adm/-) {
12312: $file=~s-^/adm/wrapper/-/-;
12313: $file=~s-^/adm/coursedocs/showdoc/-/-;
12314: }
12315: if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
12316: $file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
12317: } elsif ($file=~m-^\Q$perlvar{'lonUsersDir'}\E-) {
12318: $file=~s{^/home/httpd/lonUsers/($match_domain)/./././($match_name)/userfiles/}
12319: {/uploaded/$1/$2/}x;
12320: }
12321: if ($file=~ m{^/userfiles/}) {
12322: $file =~ s{^/userfiles/}{/uploaded/};
12323: }
12324: return $file;
12325: }
12326:
12327:
12328:
12329:
12330:
12331: sub current_machine_domains {
12332: return &machine_domains(&hostname($perlvar{'lonHostID'}));
12333: }
12334:
12335: sub machine_domains {
12336: my ($hostname) = @_;
12337: my @domains;
12338: my %hostname = &all_hostnames();
12339: while( my($id, $name) = each(%hostname)) {
12340: # &logthis("-$id-$name-$hostname-");
12341: if ($hostname eq $name) {
12342: push(@domains,&host_domain($id));
12343: }
12344: }
12345: return @domains;
12346: }
12347:
12348: sub current_machine_ids {
12349: return &machine_ids(&hostname($perlvar{'lonHostID'}));
12350: }
12351:
12352: sub machine_ids {
12353: my ($hostname) = @_;
12354: $hostname ||= &hostname($perlvar{'lonHostID'});
12355: my @ids;
12356: my %name_to_host = &all_names();
12357: if (ref($name_to_host{$hostname}) eq 'ARRAY') {
12358: return @{ $name_to_host{$hostname} };
12359: }
12360: return;
12361: }
12362:
12363: sub additional_machine_domains {
12364: my @domains;
12365: open(my $fh,"<$perlvar{'lonTabDir'}/expected_domains.tab");
12366: while( my $line = <$fh>) {
12367: $line =~ s/\s//g;
12368: push(@domains,$line);
12369: }
12370: return @domains;
12371: }
12372:
12373: sub default_login_domain {
12374: my $domain = $perlvar{'lonDefDomain'};
12375: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
12376: foreach my $posdom (¤t_machine_domains(),
12377: &additional_machine_domains()) {
12378: if (lc($posdom) eq lc($testdomain)) {
12379: $domain=$posdom;
12380: last;
12381: }
12382: }
12383: return $domain;
12384: }
12385:
12386: # ------------------------------------------------------------- Declutters URLs
12387:
12388: sub declutter {
12389: my $thisfn=shift;
12390: if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
12391: unless ($thisfn=~m{^/home/httpd/html/priv/}) {
12392: $thisfn=~s{^/home/httpd/html}{};
12393: }
12394: $thisfn=~s/^\///;
12395: $thisfn=~s|^adm/wrapper/||;
12396: $thisfn=~s|^adm/coursedocs/showdoc/||;
12397: $thisfn=~s/^res\///;
12398: $thisfn=~s/^priv\///;
12399: unless (($thisfn =~ /^ext/) || ($thisfn =~ /\.(page|sequence)___\d+___ext/)) {
12400: $thisfn=~s/\?.+$//;
12401: }
12402: return $thisfn;
12403: }
12404:
12405: # ------------------------------------------------------------- Clutter up URLs
12406:
12407: sub clutter {
12408: my $thisfn='/'.&declutter(shift);
12409: if ($thisfn !~ m{^/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)/}
12410: || $thisfn =~ m{^/adm/(includes|pages)} ) {
12411: $thisfn='/res'.$thisfn;
12412: }
12413: if ($thisfn !~m|^/adm|) {
12414: if ($thisfn =~ m|^/ext/|) {
12415: $thisfn='/adm/wrapper'.$thisfn;
12416: } else {
12417: my ($ext) = ($thisfn =~ /\.(\w+)$/);
12418: my $embstyle=&Apache::loncommon::fileembstyle($ext);
12419: if ($embstyle eq 'ssi'
12420: || ($embstyle eq 'hdn')
12421: || ($embstyle eq 'rat')
12422: || ($embstyle eq 'prv')
12423: || ($embstyle eq 'ign')) {
12424: #do nothing with these
12425: } elsif (($embstyle eq 'img')
12426: || ($embstyle eq 'emb')
12427: || ($embstyle eq 'wrp')) {
12428: $thisfn='/adm/wrapper'.$thisfn;
12429: } elsif ($embstyle eq 'unk'
12430: && $thisfn!~/\.(sequence|page)$/) {
12431: $thisfn='/adm/coursedocs/showdoc'.$thisfn;
12432: } else {
12433: # &logthis("Got a blank emb style");
12434: }
12435: }
12436: } elsif ($thisfn =~ m{^/adm/$match_domain/$match_courseid/\d+/exttools?$}) {
12437: $thisfn='/adm/wrapper'.$thisfn;
12438: }
12439: return $thisfn;
12440: }
12441:
12442: sub clutter_with_no_wrapper {
12443: my $uri = &clutter(shift);
12444: if ($uri =~ m-^/adm/-) {
12445: $uri =~ s-^/adm/wrapper/-/-;
12446: $uri =~ s-^/adm/coursedocs/showdoc/-/-;
12447: }
12448: return $uri;
12449: }
12450:
12451: sub freeze_escape {
12452: my ($value)=@_;
12453: if (ref($value)) {
12454: $value=&nfreeze($value);
12455: return '__FROZEN__'.&escape($value);
12456: }
12457: return &escape($value);
12458: }
12459:
12460:
12461: sub thaw_unescape {
12462: my ($value)=@_;
12463: if ($value =~ /^__FROZEN__/) {
12464: substr($value,0,10,undef);
12465: $value=&unescape($value);
12466: return &thaw($value);
12467: }
12468: return &unescape($value);
12469: }
12470:
12471: sub correct_line_ends {
12472: my ($result)=@_;
12473: $$result =~s/\r\n/\n/mg;
12474: $$result =~s/\r/\n/mg;
12475: }
12476: # ================================================================ Main Program
12477:
12478: sub goodbye {
12479: &logthis("Starting Shut down");
12480: #not converted to using infrastruture and probably shouldn't be
12481: &logthis(sprintf("%-20s is %s",'%badServerCache',length(&nfreeze(\%badServerCache))));
12482: #converted
12483: # &logthis(sprintf("%-20s is %s",'%metacache',scalar(%metacache)));
12484: &logthis(sprintf("%-20s is %s",'%homecache',length(&nfreeze(\%homecache))));
12485: # &logthis(sprintf("%-20s is %s",'%titlecache',length(&nfreeze(\%titlecache))));
12486: # &logthis(sprintf("%-20s is %s",'%courseresdatacache',length(&nfreeze(\%courseresdatacache))));
12487: #1.1 only
12488: # &logthis(sprintf("%-20s is %s",'%userresdatacache',length(&nfreeze(\%userresdatacache))));
12489: # &logthis(sprintf("%-20s is %s",'%getsectioncache',length(&nfreeze(\%getsectioncache))));
12490: # &logthis(sprintf("%-20s is %s",'%courseresversioncache',length(&nfreeze(\%courseresversioncache))));
12491: # &logthis(sprintf("%-20s is %s",'%resversioncache',length(&nfreeze(\%resversioncache))));
12492: &logthis(sprintf("%-20s is %s",'%remembered',length(&nfreeze(\%remembered))));
12493: &logthis(sprintf("%-20s is %s",'kicks',$kicks));
12494: &logthis(sprintf("%-20s is %s",'hits',$hits));
12495: &flushcourselogs();
12496: &logthis("Shutting down");
12497: }
12498:
12499: sub get_dns {
12500: my ($url,$func,$ignore_cache,$nocache,$hashref) = @_;
12501: if (!$ignore_cache) {
12502: my ($content,$cached)=
12503: &Apache::lonnet::is_cached_new('dns',$url);
12504: if ($cached) {
12505: &$func($content,$hashref);
12506: return;
12507: }
12508: }
12509:
12510: my %alldns;
12511: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
12512: foreach my $dns (<$config>) {
12513: next if ($dns !~ /^\^(\S*)/x);
12514: my $line = $1;
12515: my ($host,$protocol) = split(/:/,$line);
12516: if ($protocol ne 'https') {
12517: $protocol = 'http';
12518: }
12519: $alldns{$host} = $protocol;
12520: }
12521: while (%alldns) {
12522: my ($dns) = sort { $b cmp $a } keys(%alldns);
12523: my $ua=new LWP::UserAgent;
12524: $ua->timeout(30);
12525: my $request=new HTTP::Request('GET',"$alldns{$dns}://$dns$url");
12526: my $response=$ua->request($request);
12527: delete($alldns{$dns});
12528: next if ($response->is_error());
12529: my @content = split("\n",$response->content);
12530: unless ($nocache) {
12531: &do_cache_new('dns',$url,\@content,30*24*60*60);
12532: }
12533: &$func(\@content,$hashref);
12534: return;
12535: }
12536: close($config);
12537: my $which = (split('/',$url))[3];
12538: &logthis("unable to contact DNS defaulting to on disk file dns_$which.tab\n");
12539: open($config,"<$perlvar{'lonTabDir'}/dns_$which.tab");
12540: my @content = <$config>;
12541: &$func(\@content,$hashref);
12542: return;
12543: }
12544:
12545: # ------------------------------------------------------Get DNS checksums file
12546: sub parse_dns_checksums_tab {
12547: my ($lines,$hashref) = @_;
12548: my $lonhost = $perlvar{'lonHostID'};
12549: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
12550: my $loncaparev = &get_server_loncaparev($machine_dom);
12551: my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
12552: my $webconfdir = '/etc/httpd/conf';
12553: if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
12554: $webconfdir = '/etc/apache2';
12555: } elsif ($distro =~ /^sles(\d+)$/) {
12556: if ($1 >= 10) {
12557: $webconfdir = '/etc/apache2';
12558: }
12559: } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
12560: if ($1 >= 10.0) {
12561: $webconfdir = '/etc/apache2';
12562: }
12563: }
12564: my ($release,$timestamp) = split(/\-/,$loncaparev);
12565: my (%chksum,%revnum);
12566: if (ref($lines) eq 'ARRAY') {
12567: chomp(@{$lines});
12568: my $version = shift(@{$lines});
12569: if ($version eq $release) {
12570: foreach my $line (@{$lines}) {
12571: my ($file,$version,$shasum) = split(/,/,$line);
12572: if ($file =~ m{^/etc/httpd/conf}) {
12573: if ($webconfdir eq '/etc/apache2') {
12574: $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
12575: }
12576: }
12577: $chksum{$file} = $shasum;
12578: $revnum{$file} = $version;
12579: }
12580: if (ref($hashref) eq 'HASH') {
12581: %{$hashref} = (
12582: sums => \%chksum,
12583: versions => \%revnum,
12584: );
12585: }
12586: }
12587: }
12588: return;
12589: }
12590:
12591: sub fetch_dns_checksums {
12592: my %checksums;
12593: my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
12594: my $loncaparev = &get_server_loncaparev($machine_dom,$perlvar{'lonHostID'});
12595: my ($release,$timestamp) = split(/\-/,$loncaparev);
12596: &get_dns("/adm/dns/checksums/$release",\&parse_dns_checksums_tab,1,1,
12597: \%checksums);
12598: return \%checksums;
12599: }
12600:
12601: # ------------------------------------------------------------ Read domain file
12602: {
12603: my $loaded;
12604: my %domain;
12605:
12606: sub parse_domain_tab {
12607: my ($lines) = @_;
12608: foreach my $line (@$lines) {
12609: next if ($line =~ /^(\#|\s*$ )/x);
12610:
12611: chomp($line);
12612: my ($name,@elements) = split(/:/,$line,9);
12613: my %this_domain;
12614: foreach my $field ('description', 'auth_def', 'auth_arg_def',
12615: 'lang_def', 'city', 'longi', 'lati',
12616: 'primary') {
12617: $this_domain{$field} = shift(@elements);
12618: }
12619: $domain{$name} = \%this_domain;
12620: }
12621: }
12622:
12623: sub reset_domain_info {
12624: undef($loaded);
12625: undef(%domain);
12626: }
12627:
12628: sub load_domain_tab {
12629: my ($ignore_cache,$nocache) = @_;
12630: &get_dns('/adm/dns/domain',\&parse_domain_tab,$ignore_cache,$nocache);
12631: my $fh;
12632: if (open($fh,"<".$perlvar{'lonTabDir'}.'/domain.tab')) {
12633: my @lines = <$fh>;
12634: &parse_domain_tab(\@lines);
12635: }
12636: close($fh);
12637: $loaded = 1;
12638: }
12639:
12640: sub domain {
12641: &load_domain_tab() if (!$loaded);
12642:
12643: my ($name,$what) = @_;
12644: return if ( !exists($domain{$name}) );
12645:
12646: if (!$what) {
12647: return $domain{$name}{'description'};
12648: }
12649: return $domain{$name}{$what};
12650: }
12651:
12652: sub domain_info {
12653: &load_domain_tab() if (!$loaded);
12654: return %domain;
12655: }
12656:
12657: }
12658:
12659:
12660: # ------------------------------------------------------------- Read hosts file
12661: {
12662: my %hostname;
12663: my %hostdom;
12664: my %libserv;
12665: my $loaded;
12666: my %name_to_host;
12667: my %internetdom;
12668: my %LC_dns_serv;
12669:
12670: sub parse_hosts_tab {
12671: my ($file) = @_;
12672: foreach my $configline (@$file) {
12673: next if ($configline =~ /^(\#|\s*$ )/x);
12674: chomp($configline);
12675: if ($configline =~ /^\^/) {
12676: if ($configline =~ /^\^([\w.\-]+)/) {
12677: $LC_dns_serv{$1} = 1;
12678: }
12679: next;
12680: }
12681: my ($id,$domain,$role,$name,$protocol,$intdom)=split(/:/,$configline);
12682: $name=~s/\s//g;
12683: if ($id && $domain && $role && $name) {
12684: $hostname{$id}=$name;
12685: push(@{$name_to_host{$name}}, $id);
12686: $hostdom{$id}=$domain;
12687: if ($role eq 'library') { $libserv{$id}=$name; }
12688: if (defined($protocol)) {
12689: if ($protocol eq 'https') {
12690: $protocol{$id} = $protocol;
12691: } else {
12692: $protocol{$id} = 'http';
12693: }
12694: } else {
12695: $protocol{$id} = 'http';
12696: }
12697: if (defined($intdom)) {
12698: $internetdom{$id} = $intdom;
12699: }
12700: }
12701: }
12702: }
12703:
12704: sub reset_hosts_info {
12705: &purge_remembered();
12706: &reset_domain_info();
12707: &reset_hosts_ip_info();
12708: undef(%name_to_host);
12709: undef(%hostname);
12710: undef(%hostdom);
12711: undef(%libserv);
12712: undef($loaded);
12713: }
12714:
12715: sub load_hosts_tab {
12716: my ($ignore_cache,$nocache) = @_;
12717: &get_dns('/adm/dns/hosts',\&parse_hosts_tab,$ignore_cache,$nocache);
12718: open(my $config,"<$perlvar{'lonTabDir'}/hosts.tab");
12719: my @config = <$config>;
12720: &parse_hosts_tab(\@config);
12721: close($config);
12722: $loaded=1;
12723: }
12724:
12725: sub hostname {
12726: &load_hosts_tab() if (!$loaded);
12727:
12728: my ($lonid) = @_;
12729: return $hostname{$lonid};
12730: }
12731:
12732: sub all_hostnames {
12733: &load_hosts_tab() if (!$loaded);
12734:
12735: return %hostname;
12736: }
12737:
12738: sub all_names {
12739: my ($ignore_cache,$nocache) = @_;
12740: &load_hosts_tab($ignore_cache,$nocache) if (!$loaded);
12741:
12742: return %name_to_host;
12743: }
12744:
12745: sub all_host_domain {
12746: &load_hosts_tab() if (!$loaded);
12747: return %hostdom;
12748: }
12749:
12750: sub is_library {
12751: &load_hosts_tab() if (!$loaded);
12752:
12753: return exists($libserv{$_[0]});
12754: }
12755:
12756: sub all_library {
12757: &load_hosts_tab() if (!$loaded);
12758:
12759: return %libserv;
12760: }
12761:
12762: sub unique_library {
12763: #2x reverse removes all hostnames that appear more than once
12764: my %unique = reverse &all_library();
12765: return reverse %unique;
12766: }
12767:
12768: sub get_servers {
12769: &load_hosts_tab() if (!$loaded);
12770:
12771: my ($domain,$type) = @_;
12772: my %possible_hosts = ($type eq 'library') ? %libserv
12773: : %hostname;
12774: my %result;
12775: if (ref($domain) eq 'ARRAY') {
12776: while ( my ($host,$hostname) = each(%possible_hosts)) {
12777: if (grep(/^\Q$hostdom{$host}\E$/,@$domain)) {
12778: $result{$host} = $hostname;
12779: }
12780: }
12781: } else {
12782: while ( my ($host,$hostname) = each(%possible_hosts)) {
12783: if ($hostdom{$host} eq $domain) {
12784: $result{$host} = $hostname;
12785: }
12786: }
12787: }
12788: return %result;
12789: }
12790:
12791: sub get_unique_servers {
12792: my %unique = reverse &get_servers(@_);
12793: return reverse %unique;
12794: }
12795:
12796: sub host_domain {
12797: &load_hosts_tab() if (!$loaded);
12798:
12799: my ($lonid) = @_;
12800: return $hostdom{$lonid};
12801: }
12802:
12803: sub all_domains {
12804: &load_hosts_tab() if (!$loaded);
12805:
12806: my %seen;
12807: my @uniq = grep(!$seen{$_}++, values(%hostdom));
12808: return @uniq;
12809: }
12810:
12811: sub internet_dom {
12812: &load_hosts_tab() if (!$loaded);
12813:
12814: my ($lonid) = @_;
12815: return $internetdom{$lonid};
12816: }
12817:
12818: sub is_LC_dns {
12819: &load_hosts_tab() if (!$loaded);
12820:
12821: my ($hostname) = @_;
12822: return exists($LC_dns_serv{$hostname});
12823: }
12824:
12825: }
12826:
12827: {
12828: my %iphost;
12829: my %name_to_ip;
12830: my %lonid_to_ip;
12831:
12832: sub get_hosts_from_ip {
12833: my ($ip) = @_;
12834: my %iphosts = &get_iphost();
12835: if (ref($iphosts{$ip})) {
12836: return @{$iphosts{$ip}};
12837: }
12838: return;
12839: }
12840:
12841: sub reset_hosts_ip_info {
12842: undef(%iphost);
12843: undef(%name_to_ip);
12844: undef(%lonid_to_ip);
12845: }
12846:
12847: sub get_host_ip {
12848: my ($lonid) = @_;
12849: if (exists($lonid_to_ip{$lonid})) {
12850: return $lonid_to_ip{$lonid};
12851: }
12852: my $name=&hostname($lonid);
12853: my $ip = gethostbyname($name);
12854: return if (!$ip || length($ip) ne 4);
12855: $ip=inet_ntoa($ip);
12856: $name_to_ip{$name} = $ip;
12857: $lonid_to_ip{$lonid} = $ip;
12858: return $ip;
12859: }
12860:
12861: sub get_iphost {
12862: my ($ignore_cache,$nocache) = @_;
12863:
12864: if (!$ignore_cache) {
12865: if (%iphost) {
12866: return %iphost;
12867: }
12868: my ($ip_info,$cached)=
12869: &Apache::lonnet::is_cached_new('iphost','iphost');
12870: if ($cached) {
12871: %iphost = %{$ip_info->[0]};
12872: %name_to_ip = %{$ip_info->[1]};
12873: %lonid_to_ip = %{$ip_info->[2]};
12874: return %iphost;
12875: }
12876: }
12877:
12878: # get yesterday's info for fallback
12879: my %old_name_to_ip;
12880: my ($ip_info,$cached)=
12881: &Apache::lonnet::is_cached_new('iphost','iphost');
12882: if ($cached) {
12883: %old_name_to_ip = %{$ip_info->[1]};
12884: }
12885:
12886: my %name_to_host = &all_names($ignore_cache,$nocache);
12887: foreach my $name (keys(%name_to_host)) {
12888: my $ip;
12889: if (!exists($name_to_ip{$name})) {
12890: $ip = gethostbyname($name);
12891: if (!$ip || length($ip) ne 4) {
12892: if (defined($old_name_to_ip{$name})) {
12893: $ip = $old_name_to_ip{$name};
12894: &logthis("Can't find $name defaulting to old $ip");
12895: } else {
12896: &logthis("Name $name no IP found");
12897: next;
12898: }
12899: } else {
12900: $ip=inet_ntoa($ip);
12901: }
12902: $name_to_ip{$name} = $ip;
12903: } else {
12904: $ip = $name_to_ip{$name};
12905: }
12906: foreach my $id (@{ $name_to_host{$name} }) {
12907: $lonid_to_ip{$id} = $ip;
12908: }
12909: push(@{$iphost{$ip}},@{$name_to_host{$name}});
12910: }
12911: unless ($nocache) {
12912: &do_cache_new('iphost','iphost',
12913: [\%iphost,\%name_to_ip,\%lonid_to_ip],
12914: 48*60*60);
12915: }
12916:
12917: return %iphost;
12918: }
12919:
12920: #
12921: # Given a DNS returns the loncapa host name for that DNS
12922: #
12923: sub host_from_dns {
12924: my ($dns) = @_;
12925: my @hosts;
12926: my $ip;
12927:
12928: if (exists($name_to_ip{$dns})) {
12929: $ip = $name_to_ip{$dns};
12930: }
12931: if (!$ip) {
12932: $ip = gethostbyname($dns); # Initial translation to IP is in net order.
12933: if (length($ip) == 4) {
12934: $ip = &IO::Socket::inet_ntoa($ip);
12935: }
12936: }
12937: if ($ip) {
12938: @hosts = get_hosts_from_ip($ip);
12939: return $hosts[0];
12940: }
12941: return undef;
12942: }
12943:
12944: sub get_internet_names {
12945: my ($lonid) = @_;
12946: return if ($lonid eq '');
12947: my ($idnref,$cached)=
12948: &Apache::lonnet::is_cached_new('internetnames',$lonid);
12949: if ($cached) {
12950: return $idnref;
12951: }
12952: my $ip = &get_host_ip($lonid);
12953: my @hosts = &get_hosts_from_ip($ip);
12954: my %iphost = &get_iphost();
12955: my (@idns,%seen);
12956: foreach my $id (@hosts) {
12957: my $dom = &host_domain($id);
12958: my $prim_id = &domain($dom,'primary');
12959: my $prim_ip = &get_host_ip($prim_id);
12960: next if ($seen{$prim_ip});
12961: if (ref($iphost{$prim_ip}) eq 'ARRAY') {
12962: foreach my $id (@{$iphost{$prim_ip}}) {
12963: my $intdom = &internet_dom($id);
12964: unless (grep(/^\Q$intdom\E$/,@idns)) {
12965: push(@idns,$intdom);
12966: }
12967: }
12968: }
12969: $seen{$prim_ip} = 1;
12970: }
12971: return &do_cache_new('internetnames',$lonid,\@idns,12*60*60);
12972: }
12973:
12974: }
12975:
12976: sub all_loncaparevs {
12977: return qw(1.1 1.2 1.3 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11);
12978: }
12979:
12980: # ---------------------------------------------------------- Read loncaparev table
12981: {
12982: sub load_loncaparevs {
12983: if (-e "$perlvar{'lonTabDir'}/loncaparevs.tab") {
12984: if (open(my $config,"<$perlvar{'lonTabDir'}/loncaparevs.tab")) {
12985: while (my $configline=<$config>) {
12986: chomp($configline);
12987: my ($hostid,$loncaparev)=split(/:/,$configline);
12988: $loncaparevs{$hostid}=$loncaparev;
12989: }
12990: close($config);
12991: }
12992: }
12993: }
12994: }
12995:
12996: # ---------------------------------------------------------- Read serverhostID table
12997: {
12998: sub load_serverhomeIDs {
12999: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
13000: if (open(my $config,"<$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
13001: while (my $configline=<$config>) {
13002: chomp($configline);
13003: my ($name,$id)=split(/:/,$configline);
13004: $serverhomeIDs{$name}=$id;
13005: }
13006: close($config);
13007: }
13008: }
13009: }
13010: }
13011:
13012:
13013: BEGIN {
13014:
13015: # ----------------------------------- Read loncapa.conf and loncapa_apache.conf
13016: unless ($readit) {
13017: {
13018: my $configvars = LONCAPA::Configuration::read_conf('loncapa.conf');
13019: %perlvar = (%perlvar,%{$configvars});
13020: }
13021:
13022:
13023: # ------------------------------------------------------ Read spare server file
13024: {
13025: open(my $config,"<$perlvar{'lonTabDir'}/spare.tab");
13026:
13027: while (my $configline=<$config>) {
13028: chomp($configline);
13029: if ($configline) {
13030: my ($host,$type) = split(':',$configline,2);
13031: if (!defined($type) || $type eq '') { $type = 'default' };
13032: push(@{ $spareid{$type} }, $host);
13033: }
13034: }
13035: close($config);
13036: }
13037: # ------------------------------------------------------------ Read permissions
13038: {
13039: open(my $config,"<$perlvar{'lonTabDir'}/roles.tab");
13040:
13041: while (my $configline=<$config>) {
13042: chomp($configline);
13043: if ($configline) {
13044: my ($role,$perm)=split(/ /,$configline);
13045: if ($perm ne '') { $pr{$role}=$perm; }
13046: }
13047: }
13048: close($config);
13049: }
13050:
13051: # -------------------------------------------- Read plain texts for permissions
13052: {
13053: open(my $config,"<$perlvar{'lonTabDir'}/rolesplain.tab");
13054:
13055: while (my $configline=<$config>) {
13056: chomp($configline);
13057: if ($configline) {
13058: my ($short,@plain)=split(/:/,$configline);
13059: %{$prp{$short}} = ();
13060: if (@plain > 0) {
13061: $prp{$short}{'std'} = $plain[0];
13062: for (my $i=1; $i<@plain; $i++) {
13063: $prp{$short}{'alt'.$i} = $plain[$i];
13064: }
13065: }
13066: }
13067: }
13068: close($config);
13069: }
13070:
13071: # ---------------------------------------------------------- Read package table
13072: {
13073: open(my $config,"<$perlvar{'lonTabDir'}/packages.tab");
13074:
13075: while (my $configline=<$config>) {
13076: if ($configline !~ /\S/ || $configline=~/^#/) { next; }
13077: chomp($configline);
13078: my ($short,$plain)=split(/:/,$configline);
13079: my ($pack,$name)=split(/\&/,$short);
13080: if ($plain ne '') {
13081: $packagetab{$pack.'&'.$name.'&name'}=$name;
13082: $packagetab{$short}=$plain;
13083: }
13084: }
13085: close($config);
13086: }
13087:
13088: # ---------------------------------------------------------- Read loncaparev table
13089:
13090: &load_loncaparevs();
13091:
13092: # ---------------------------------------------------------- Read serverhostID table
13093:
13094: &load_serverhomeIDs();
13095:
13096: # ---------------------------------------------------------- Read releaseslist XML
13097: {
13098: my $file = $Apache::lonnet::perlvar{'lonTabDir'}.'/releaseslist.xml';
13099: if (-e $file) {
13100: my $parser = HTML::LCParser->new($file);
13101: while (my $token = $parser->get_token()) {
13102: if ($token->[0] eq 'S') {
13103: my $item = $token->[1];
13104: my $name = $token->[2]{'name'};
13105: my $value = $token->[2]{'value'};
13106: my $valuematch = $token->[2]{'valuematch'};
13107: my $namematch = $token->[2]{'namematch'};
13108: if ($item eq 'parameter') {
13109: if (($namematch ne '') || (($name ne '') && ($value ne '' || $valuematch ne ''))) {
13110: my $release = $parser->get_text();
13111: $release =~ s/(^\s*|\s*$ )//gx;
13112: $needsrelease{$item.':'.$name.':'.$value.':'.$valuematch.':'.$namematch} = $release;
13113: }
13114: } elsif ($item ne '' && $name ne '') {
13115: my $release = $parser->get_text();
13116: $release =~ s/(^\s*|\s*$ )//gx;
13117: $needsrelease{$item.':'.$name.':'.$value} = $release;
13118: }
13119: }
13120: }
13121: }
13122: }
13123:
13124: # ---------------------------------------------------------- Read managers table
13125: {
13126: if (-e "$perlvar{'lonTabDir'}/managers.tab") {
13127: if (open(my $config,"<$perlvar{'lonTabDir'}/managers.tab")) {
13128: while (my $configline=<$config>) {
13129: chomp($configline);
13130: next if ($configline =~ /^\#/);
13131: if (($configline =~ /^[\w\-]+$/) || ($configline =~ /^[\w\-]+\:[\w\-]+$/)) {
13132: $managerstab{$configline} = 1;
13133: }
13134: }
13135: close($config);
13136: }
13137: }
13138: }
13139:
13140: # ------------- set up temporary directory
13141: {
13142: $tmpdir = LONCAPA::tempdir();
13143:
13144: }
13145:
13146: $memcache=new Cache::Memcached({'servers' => ['127.0.0.1:11211'],
13147: 'compress_threshold'=> 20_000,
13148: });
13149:
13150: $processmarker='_'.time.'_'.$perlvar{'lonHostID'};
13151: $dumpcount=0;
13152: $locknum=0;
13153:
13154: &logtouch();
13155: &logthis('<font color="yellow">INFO: Read configuration</font>');
13156: $readit=1;
13157: {
13158: use integer;
13159: my $test=(2**32)+1;
13160: if ($test != 0) { $_64bit=1; } else { $_64bit=0; }
13161: &logthis(" Detected 64bit platform ($_64bit)");
13162: }
13163: }
13164: }
13165:
13166: 1;
13167: __END__
13168:
13169: =pod
13170:
13171: =head1 NAME
13172:
13173: Apache::lonnet - Subroutines to ask questions about things in the network.
13174:
13175: =head1 SYNOPSIS
13176:
13177: Invoked by other LON-CAPA modules, when they need to talk to or about objects in the network.
13178:
13179: &Apache::lonnet::SUBROUTINENAME(ARGUMENTS);
13180:
13181: Common parameters:
13182:
13183: =over 4
13184:
13185: =item *
13186:
13187: $uname : an internal username (if $cname expecting a course Id specifically)
13188:
13189: =item *
13190:
13191: $udom : a domain (if $cdom expecting a course's domain specifically)
13192:
13193: =item *
13194:
13195: $symb : a resource instance identifier
13196:
13197: =item *
13198:
13199: $namespace : the name of a .db file that contains the data needed or
13200: being set.
13201:
13202: =back
13203:
13204: =head1 OVERVIEW
13205:
13206: lonnet provides subroutines which interact with the
13207: lonc/lond (TCP) network layer of LON-CAPA. They can be used to ask
13208: about classes, users, and resources.
13209:
13210: For many of these objects you can also use this to store data about
13211: them or modify them in various ways.
13212:
13213: =head2 Symbs
13214:
13215: To identify a specific instance of a resource, LON-CAPA uses symbols
13216: or "symbs"X<symb>. These identifiers are built from the URL of the
13217: map, the resource number of the resource in the map, and the URL of
13218: the resource itself. The latter is somewhat redundant, but might help
13219: if maps change.
13220:
13221: An example is
13222:
13223: msu/korte/parts/part1.sequence___19___msu/korte/tests/part12.problem
13224:
13225: The respective map entry is
13226:
13227: <resource id="19" src="/res/msu/korte/tests/part12.problem"
13228: title="Problem 2">
13229: </resource>
13230:
13231: Symbs are used by the random number generator, as well as to store and
13232: restore data specific to a certain instance of for example a problem.
13233:
13234: =head2 Storing And Retrieving Data
13235:
13236: X<store()>X<cstore()>X<restore()>Three of the most important functions
13237: in C<lonnet.pm> are C<&Apache::lonnet::cstore()>,
13238: C<&Apache::lonnet:restore()>, and C<&Apache::lonnet::store()>, which
13239: is is the non-critical message twin of cstore. These functions are for
13240: handlers to store a perl hash to a user's permanent data space in an
13241: easy manner, and to retrieve it again on another call. It is expected
13242: that a handler would use this once at the beginning to retrieve data,
13243: and then again once at the end to send only the new data back.
13244:
13245: The data is stored in the user's data directory on the user's
13246: homeserver under the ID of the course.
13247:
13248: The hash that is returned by restore will have all of the previous
13249: value for all of the elements of the hash.
13250:
13251: Example:
13252:
13253: #creating a hash
13254: my %hash;
13255: $hash{'foo'}='bar';
13256:
13257: #storing it
13258: &Apache::lonnet::cstore(\%hash);
13259:
13260: #changing a value
13261: $hash{'foo'}='notbar';
13262:
13263: #adding a new value
13264: $hash{'bar'}='foo';
13265: &Apache::lonnet::cstore(\%hash);
13266:
13267: #retrieving the hash
13268: my %history=&Apache::lonnet::restore();
13269:
13270: #print the hash
13271: foreach my $key (sort(keys(%history))) {
13272: print("\%history{$key} = $history{$key}");
13273: }
13274:
13275: Will print out:
13276:
13277: %history{1:foo} = bar
13278: %history{1:keys} = foo:timestamp
13279: %history{1:timestamp} = 990455579
13280: %history{2:bar} = foo
13281: %history{2:foo} = notbar
13282: %history{2:keys} = foo:bar:timestamp
13283: %history{2:timestamp} = 990455580
13284: %history{bar} = foo
13285: %history{foo} = notbar
13286: %history{timestamp} = 990455580
13287: %history{version} = 2
13288:
13289: Note that the special hash entries C<keys>, C<version> and
13290: C<timestamp> were added to the hash. C<version> will be equal to the
13291: total number of versions of the data that have been stored. The
13292: C<timestamp> attribute will be the UNIX time the hash was
13293: stored. C<keys> is available in every historical section to list which
13294: keys were added or changed at a specific historical revision of a
13295: hash.
13296:
13297: B<Warning>: do not store the hash that restore returns directly. This
13298: will cause a mess since it will restore the historical keys as if the
13299: were new keys. I.E. 1:foo will become 1:1:foo etc.
13300:
13301: Calling convention:
13302:
13303: my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$uname);
13304: &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$uname,$laststore);
13305:
13306: For more detailed information, see lonnet specific documentation.
13307:
13308: =head1 RETURN MESSAGES
13309:
13310: =over 4
13311:
13312: =item * B<con_lost>: unable to contact remote host
13313:
13314: =item * B<con_delayed>: unable to contact remote host, message will be delivered
13315: when the connection is brought back up
13316:
13317: =item * B<con_failed>: unable to contact remote host and unable to save message
13318: for later delivery
13319:
13320: =item * B<error:>: an error a occurred, a description of the error follows the :
13321:
13322: =item * B<no_such_host>: unable to fund a host associated with the user/domain
13323: that was requested
13324:
13325: =back
13326:
13327: =head1 PUBLIC SUBROUTINES
13328:
13329: =head2 Session Environment Functions
13330:
13331: =over 4
13332:
13333: =item *
13334: X<appenv()>
13335: B<appenv($hashref,$rolesarrayref)>: the value of %{$hashref} is written to
13336: the user envirnoment file, and will be restored for each access this
13337: user makes during this session, also modifies the %env for the current
13338: process. Optional rolesarrayref - if defined contains a reference to an array
13339: of roles which are exempt from the restriction on modifying user.role entries
13340: in the user's environment.db and in %env.
13341:
13342: =item *
13343: X<delenv()>
13344: B<delenv($delthis,$regexp)>: removes all items from the session
13345: environment file that begin with $delthis. If the
13346: optional second arg - $regexp - is true, $delthis is treated as a
13347: regular expression, otherwise \Q$delthis\E is used.
13348: The values are also deleted from the current processes %env.
13349:
13350: =item * get_env_multiple($name)
13351:
13352: gets $name from the %env hash, it seemlessly handles the cases where multiple
13353: values may be defined and end up as an array ref.
13354:
13355: returns an array of values
13356:
13357: =back
13358:
13359: =head2 User Information
13360:
13361: =over 4
13362:
13363: =item *
13364: X<queryauthenticate()>
13365: B<queryauthenticate($uname,$udom)>: try to determine user's current
13366: authentication scheme
13367:
13368: =item *
13369: X<authenticate()>
13370: B<authenticate($uname,$upass,$udom,$checkdefauth,$clientcancheckhost)>: try to
13371: authenticate user from domain's lib servers (first use the current
13372: one). C<$upass> should be the users password.
13373: $checkdefauth is optional (value is 1 if a check should be made to
13374: authenticate user using default authentication method, and allow
13375: account creation if username does not have account in the domain).
13376: $clientcancheckhost is optional (value is 1 if checking whether the
13377: server can host will occur on the client side in lonauth.pm).
13378:
13379: =item *
13380: X<homeserver()>
13381: B<homeserver($uname,$udom)>: find the server which has
13382: the user's directory and files (there must be only one), this caches
13383: the answer, and also caches if there is a borken connection.
13384:
13385: =item *
13386: X<idget()>
13387: B<idget($udom,$idsref,$namespace)>: find the usernames behind either
13388: a list of student/employee IDs or clicker IDs
13389: (student/employee IDs are a unique resource in a domain, there must be
13390: only 1 ID per username, and only 1 username per ID in a specific domain).
13391: clickerIDs are not necessarily unique, as students might share clickers.
13392: (returns hash: id=>name,id=>name)
13393:
13394: =item *
13395: X<idrget()>
13396: B<idrget($udom,@unames)>: find the IDs behind a list of
13397: usernames (returns hash: name=>id,name=>id)
13398:
13399: =item *
13400: X<idput()>
13401: B<idput($udom,$idsref,$uhome,$namespace)>: store away a list of
13402: names and associated student/employee IDs or clicker IDs.
13403:
13404: =item *
13405: X<iddel()>
13406: B<iddel($udom,$idshashref,$uhome,$namespace)>: delete unwanted
13407: student/employee ID or clicker ID username look-ups from domain.
13408: The homeserver ($uhome) and namespace ($namespace) are optional.
13409: If no $uhome is provided, it will be determined usig &homeserver()
13410: for each user. If no $namespace is provided, the default is ids.
13411:
13412: =item *
13413: X<updateclickers()>
13414: B<updateclickers($udom,$action,$idshashref,$uhome,$critical)>: update
13415: clicker ID-to-username look-ups in clickers.db on library server.
13416: Permitted actions are add or del (i.e., add or delete). The
13417: clickers.db contains clickerID as keys (escaped), and each corresponding
13418: value is an escaped comma-separated list of usernames (for whom the
13419: library server is the homeserver), who registered that particular ID.
13420: If $critical is true, the update will be sent via &critical, otherwise
13421: &reply() will be used.
13422:
13423: =item *
13424: X<rolesinit()>
13425: B<rolesinit($udom,$username)>: get user privileges.
13426: returns user role, first access and timer interval hashes
13427:
13428: =item *
13429: X<privileged()>
13430: B<privileged($username,$domain)>: returns a true if user has a
13431: privileged and active role (i.e. su or dc), false otherwise.
13432:
13433: =item *
13434: X<getsection()>
13435: B<getsection($udom,$uname,$cname)>: finds the section of student in the
13436: course $cname, return section name/number or '' for "not in course"
13437: and '-1' for "no section"
13438:
13439: =item *
13440: X<userenvironment()>
13441: B<userenvironment($udom,$uname,@what)>: gets the values of the keys
13442: passed in @what from the requested user's environment, returns a hash
13443:
13444: =item *
13445: X<userlog_query()>
13446: B<userlog_query($uname,$udom,%filters)>: retrieves data from a user's
13447: activity.log file. %filters defines filters applied when parsing the
13448: log file. These can be start or end timestamps, or the type of action
13449: - log to look for Login or Logout events, check for Checkin or
13450: Checkout, role for role selection. The response is in the form
13451: timestamp1:hostid1:event1×tamp2:hostid2:event2 where events are
13452: escaped strings of the action recorded in the activity.log file.
13453:
13454: =back
13455:
13456: =head2 User Roles
13457:
13458: =over 4
13459:
13460: =item *
13461:
13462: allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege;
13463: returns codes for allowed actions.
13464:
13465: The first argument is required, all others are optional.
13466:
13467: $priv is the privilege being checked.
13468: $uri contains additional information about what is being checked for access (e.g.,
13469: URL, course ID etc.).
13470: $symb is the unique resource instance identifier in a course; if needed,
13471: but not provided, it will be retrieved via a call to &symbread().
13472: $role is the role for which a priv is being checked (only used if priv is evb).
13473: $clientip is the user's IP address (only used when checking for access to portfolio
13474: files).
13475: $noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
13476: prevents recursive calls to &allowed.
13477:
13478: F: full access
13479: U,I,K: authentication modes (cxx only)
13480: '': forbidden
13481: 1: user needs to choose course
13482: 2: browse allowed
13483: A: passphrase authentication needed
13484: B: access temporarily blocked because of a blocking event in a course.
13485:
13486: =item *
13487:
13488: constructaccess($url,$setpriv) : check for access to construction space URL
13489:
13490: See if the owner domain and name in the URL match those in the
13491: expected environment. If so, return three element list
13492: ($ownername,$ownerdomain,$ownerhome).
13493:
13494: Otherwise return the null string.
13495:
13496: If second argument 'setpriv' is true, it assigns the privileges,
13497: and returns the same three element list, unless the owner has
13498: blocked "ad hoc" Domain Coordinator access to the Author Space,
13499: in which case the null string is returned.
13500:
13501: =item *
13502:
13503: definerole($rolename,$sysrole,$domrole,$courole) : define role; define a custom
13504: role rolename set privileges in format of lonTabs/roles.tab for system, domain,
13505: and course level
13506:
13507: =item *
13508:
13509: plaintext($short,$type,$cid,$forcedefault) : return value in %prp hash
13510: (rolesplain.tab); plain text explanation of a user role term.
13511: $type is Course (default) or Community.
13512: If $forcedefault evaluates to true, text returned will be default
13513: text for $type. Otherwise, if this is a course, the text returned
13514: will be a custom name for the role (if defined in the course's
13515: environment). If no custom name is defined the default is returned.
13516:
13517: =item *
13518:
13519: get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
13520: All arguments are optional. Returns a hash of a roles, either for
13521: co-author/assistant author roles for a user's Construction Space
13522: (default), or if $context is 'userroles', roles for the user himself,
13523: In the hash, keys are set to colon-separated $uname,$udom,$role, and
13524: (optionally) if $withsec is true, a fourth colon-separated item - $section.
13525: For each key, value is set to colon-separated start and end times for
13526: the role. If no username and domain are specified, will default to
13527: current user/domain. Types, roles, and roledoms are references to arrays
13528: of role statuses (active, future or previous), roles
13529: (e.g., cc,in, st etc.) and domains of the roles which can be used
13530: to restrict the list of roles reported. If no array ref is
13531: provided for types, will default to return only active roles.
13532:
13533: =item *
13534:
13535: in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
13536: user: $uname:$udom has a role in the course: $cdom_$cnum.
13537:
13538: Additional optional arguments are: $type (if role checking is to be restricted
13539: to certain user status types -- previous (expired roles), active (currently
13540: available roles) or future (roles available in the future), and
13541: $hideprivileged -- if true will not report course roles for users who
13542: have active Domain Coordinator role in course's domain or in additional
13543: domains (specified in 'Domains to check for privileged users' in course
13544: environment -- set via: Course Settings -> Classlists and staff listing).
13545:
13546: =item *
13547:
13548: privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
13549: $username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
13550: $possdomains and $possroles are optional array refs -- to domains to check and
13551: roles to check. If $possdomains is not specified, a dump will be done of the
13552: users' roles.db to check for a dc or su role in any domain. This can be
13553: time consuming if &privileged is called repeatedly (e.g., when displaying a
13554: classlist), so in such cases, supplying a $possdomains array is preferred, as
13555: this then allows &privileged_by_domain() to be used, which caches the identity
13556: of privileged users, eliminating the need for repeated calls to &dump().
13557:
13558: =item *
13559:
13560: privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
13561: where the outer hash keys are domains specified in the $possdomains array ref,
13562: next inner hash keys are privileged roles specified in the $roles array ref,
13563: and the innermost hash contains key = value pairs for username:domain = end:start
13564: for active or future "privileged" users with that role in that domain. To avoid
13565: repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
13566: innerhash are cached using priv_$role and $dom as the identifiers.
13567:
13568: =back
13569:
13570: =head2 User Modification
13571:
13572: =over 4
13573:
13574: =item *
13575:
13576: assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
13577: user for the level given by URL. Optional start and end dates (leave empty
13578: string or zero for "no date")
13579:
13580: =item *
13581:
13582: changepass($uname,$udom,$currentpass,$newpass,$server) : attempts to
13583: change a users, password, possible return values are: ok,
13584: pwchange_failure, non_authorized, auth_mode_error, unknown_user,
13585: refused
13586:
13587: =item *
13588:
13589: modifyuserauth($udom,$uname,$umode,$upass) : modify user authentication
13590:
13591: =item *
13592:
13593: modifyuser($udom,$uname,$uid,$umode,$upass,$first,$middle,$last, $gene,
13594: $forceid,$desiredhome,$email,$inststatus,$candelete) :
13595:
13596: will update user information (firstname,middlename,lastname,generation,
13597: permanentemail), and if forceid is true, student/employee ID also.
13598: A user's institutional affiliation(s) can also be updated.
13599: User information fields will not be overwritten with empty entries
13600: unless the field is included in the $candelete array reference.
13601: This array is included when a single user is modified via "Manage Users",
13602: or when Autoupdate.pl is run by cron in a domain.
13603:
13604: =item *
13605:
13606: modifystudent
13607:
13608: modify a student's enrollment and identification information.
13609: The course id is resolved based on the current user's environment.
13610: This means the invoking user must be a course coordinator or otherwise
13611: associated with a course.
13612:
13613: This call is essentially a wrapper for lonnet::modifyuser and
13614: lonnet::modify_student_enrollment
13615:
13616: Inputs:
13617:
13618: =over 4
13619:
13620: =item B<$udom> Student's loncapa domain
13621:
13622: =item B<$uname> Student's loncapa login name
13623:
13624: =item B<$uid> Student/Employee ID
13625:
13626: =item B<$umode> Student's authentication mode
13627:
13628: =item B<$upass> Student's password
13629:
13630: =item B<$first> Student's first name
13631:
13632: =item B<$middle> Student's middle name
13633:
13634: =item B<$last> Student's last name
13635:
13636: =item B<$gene> Student's generation
13637:
13638: =item B<$usec> Student's section in course
13639:
13640: =item B<$end> Unix time of the roles expiration
13641:
13642: =item B<$start> Unix time of the roles start date
13643:
13644: =item B<$forceid> If defined, allow $uid to be changed
13645:
13646: =item B<$desiredhome> server to use as home server for student
13647:
13648: =item B<$email> Student's permanent e-mail address
13649:
13650: =item B<$type> Type of enrollment (auto or manual)
13651:
13652: =item B<$locktype> boolean - enrollment type locked to prevent Autoenroll.pl changing manual to auto
13653:
13654: =item B<$cid> courseID - needed if a course role is assigned by a user whose current role is DC
13655:
13656: =item B<$selfenroll> boolean - 1 if user role change occurred via self-enrollment
13657:
13658: =item B<$context> role change context (shown in User Management Logs display in a course)
13659:
13660: =item B<$inststatus> institutional status of user - : separated string of escaped status types
13661:
13662: =item B<$credits> Number of credits student will earn from this class - only needs to be supplied if value needs to be different from default credits for class.
13663:
13664: =back
13665:
13666: =item *
13667:
13668: modify_student_enrollment
13669:
13670: Change a student's enrollment status in a class. The environment variable
13671: 'role.request.course' must be defined for this function to proceed.
13672:
13673: Inputs:
13674:
13675: =over 4
13676:
13677: =item $udom, student's domain
13678:
13679: =item $uname, student's name
13680:
13681: =item $uid, student's user id
13682:
13683: =item $first, student's first name
13684:
13685: =item $middle
13686:
13687: =item $last
13688:
13689: =item $gene
13690:
13691: =item $usec
13692:
13693: =item $end
13694:
13695: =item $start
13696:
13697: =item $type
13698:
13699: =item $locktype
13700:
13701: =item $cid
13702:
13703: =item $selfenroll
13704:
13705: =item $context
13706:
13707: =item $credits, number of credits student will earn from this class
13708:
13709: =back
13710:
13711:
13712: =item *
13713:
13714: assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start) : assign
13715: custom role; give a custom role to a user for the level given by URL. Specify
13716: name and domain of role author, and role name
13717:
13718: =item *
13719:
13720: revokerole($udom,$uname,$url,$role) : revoke a role for url
13721:
13722: =item *
13723:
13724: revokecustomrole($udom,$uname,$url,$role) : revoke a custom role
13725:
13726: =back
13727:
13728: =head2 Course Infomation
13729:
13730: =over 4
13731:
13732: =item *
13733:
13734: coursedescription($courseid,$options) : returns a hash of information about the
13735: specified course id, including all environment settings for the
13736: course, the description of the course will be in the hash under the
13737: key 'description'
13738:
13739: $options is an optional parameter that if supplied is a hash reference that controls
13740: what how this function works. It has the following key/values:
13741:
13742: =over 4
13743:
13744: =item freshen_cache
13745:
13746: If defined, and the environment cache for the course is valid, it is
13747: returned in the returned hash.
13748:
13749: =item one_time
13750:
13751: If defined, the last cache time is set to _now_
13752:
13753: =item user
13754:
13755: If defined, the supplied username is used instead of the current user.
13756:
13757:
13758: =back
13759:
13760: =item *
13761:
13762: resdata($name,$domain,$type,@which) : request for current parameter
13763: setting for a specific $type, where $type is either 'course' or 'user',
13764: @what should be a list of parameters to ask about. This routine caches
13765: answers for 10 minutes.
13766:
13767: =item *
13768:
13769: get_courseresdata($courseid, $domain) : dump the entire course resource
13770: data base, returning a hash that is keyed by the resource name and has
13771: values that are the resource value. I believe that the timestamps and
13772: versions are also returned.
13773:
13774: get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
13775: supplemental content area. This routine caches the number of files for
13776: 10 minutes.
13777:
13778: =back
13779:
13780: =head2 Course Modification
13781:
13782: =over 4
13783:
13784: =item *
13785:
13786: writecoursepref($courseid,%prefs) : write preferences (environment
13787: database) for a course
13788:
13789: =item *
13790:
13791: createcourse($udom,$description,$url,$course_server,$nonstandard,$inst_code,$course_owner,$crstype,$cnum) : make course
13792:
13793: =item *
13794:
13795: generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
13796:
13797: =item *
13798:
13799: is_course($courseid), is_course($cdom, $cnum)
13800:
13801: Accepts either a combined $courseid (in the form of domain_courseid) or the
13802: two component version $cdom, $cnum. It checks if the specified course exists.
13803:
13804: Returns:
13805: undef if the course doesn't exist, otherwise
13806: in scalar context the combined courseid.
13807: in list context the two components of the course identifier, domain and
13808: courseid.
13809:
13810: =back
13811:
13812: =head2 Resource Subroutines
13813:
13814: =over 4
13815:
13816: =item *
13817:
13818: subscribe($fname) : subscribe to a resource, returns URL if possible (probably should use repcopy instead)
13819:
13820: =item *
13821:
13822: repcopy($filename) : subscribes to the requested file, and attempts to
13823: replicate from the owning library server, Might return
13824: 'unavailable', 'not_found', 'forbidden', 'ok', or
13825: 'bad_request', also attempts to grab the metadata for the
13826: resource. Expects the local filesystem pathname
13827: (/home/httpd/html/res/....)
13828:
13829: =back
13830:
13831: =head2 Resource Information
13832:
13833: =over 4
13834:
13835: =item *
13836:
13837: EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
13838: and returns the value of a variety of different possible values,
13839: $varname should be a request string, and the other parameters can be
13840: used to specify who and what one is asking about. Ordinarily, $cid
13841: does not need to be specified, as it is retrived from
13842: $env{'request.course.id'}, but &Apache::lonnet::EXT() is called
13843: within lonuserstate::loadmap() when initializing a course, before
13844: $env{'request.course.id'} has been set, so it needs to be provided
13845: in that one case.
13846:
13847: Possible values for $varname are environment.lastname (or other item
13848: from the envirnment hash), user.name (or someother aspect about the
13849: user), resource.0.maxtries (or some other part and parameter of a
13850: resource)
13851:
13852: =item *
13853:
13854: directcondval($number) : get current value of a condition; reads from a state
13855: string
13856:
13857: =item *
13858:
13859: condval($condidx) : value of condition index based on state
13860:
13861: =item *
13862:
13863: metadata($uri,$what,$liburi,$prefix,$depthcount) : request a
13864: resource's metadata, $what should be either a specific key, or either
13865: 'keys' (to get a list of possible keys) or 'packages' to get a list of
13866: packages that this resource currently uses, the last 3 arguments are only used internally for recursive metadata.
13867:
13868: this function automatically caches all requests
13869:
13870: =item *
13871:
13872: metadata_query($query,$custom,$customshow) : make a metadata query against the
13873: network of library servers; returns file handle of where SQL and regex results
13874: will be stored for query
13875:
13876: =item *
13877:
13878: symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
13879: return symbolic list entry (all arguments optional).
13880:
13881: Args: filename is the filename (including path) for the file for which a symb
13882: is required; donotrecurse, if true will prevent calls to allowed() being made
13883: to check access status if more than one resource was found in the bighash
13884: (see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
13885: a randompick); ignorecachednull, if true will prevent a symb of '' being
13886: returned if $env{$cache_str} is defined as ''; checkforblock if true will
13887: cause possible symbs to be checked to determine if they are subject to content
13888: blocking, if so they will not be included as possible symbs; possibles is a
13889: ref to a hash, which, as a side effect, will be populated with all possible
13890: symbs (content blocking not tested).
13891:
13892: returns the data handle
13893:
13894: =item *
13895:
13896: symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
13897: and is a possible symb for the URL in $thisfn, and if is an encrypted
13898: resource that the user accessed using /enc/ returns a 1 on success, 0
13899: on failure, user must be in a course, as it assumes the existence of
13900: the course initial hash, and uses $env('request.course.id'}. The third
13901: arg is an optional reference to a scalar. If this arg is passed in the
13902: call to symbverify, it will be set to 1 if the symb has been set to be
13903: encrypted; otherwise it will be null.
13904:
13905: =item *
13906:
13907: symbclean($symb) : removes versions numbers from a symb, returns the
13908: cleaned symb
13909:
13910: =item *
13911:
13912: is_on_map($uri) : checks if the $uri is somewhere on the current
13913: course map, user must be in a course for it to work.
13914:
13915: =item *
13916:
13917: numval($salt) : return random seed value (addend for rndseed)
13918:
13919: =item *
13920:
13921: rndseed($symb,$courseid,$udom,$uname) : create a random sum; returns
13922: a random seed, all arguments are optional, if they aren't sent it uses the
13923: environment to derive them. Note: if symb isn't sent and it can't get one
13924: from &symbread it will use the current time as its return value
13925:
13926: =item *
13927:
13928: ireceipt($funame,$fudom,$fucourseid,$fusymb) : return unique,
13929: unfakeable, receipt
13930:
13931: =item *
13932:
13933: receipt() : API to ireceipt working off of env values; given out to users
13934:
13935: =item *
13936:
13937: countacc($url) : count the number of accesses to a given URL
13938:
13939: =item *
13940:
13941: checkout($symb,$tuname,$tudom,$tcrsid) : creates a record of a user having looked at an item, most likely printed out or otherwise using a resource
13942:
13943: =item *
13944:
13945: checkin($token) : updates that a resource has beeen returned (a hard copy version for instance) and returns the data that $token was Checkout with ($symb, $tuname, $tudom, and $tcrsid)
13946:
13947: =item *
13948:
13949: expirespread($uname,$udom,$stype,$usymb) : set expire date for spreadsheet
13950:
13951: =item *
13952:
13953: devalidate($symb) : devalidate temporary spreadsheet calculations,
13954: forcing spreadsheet to reevaluate the resource scores next time.
13955:
13956: =item *
13957:
13958: can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
13959: when viewing in course context.
13960:
13961: input: six args -- filename (decluttered), course number, course domain,
13962: url, symb (if registered) and group (if this is a
13963: group item -- e.g., bulletin board, group page etc.).
13964:
13965: output: array of five scalars --
13966: $cfile -- url for file editing if editable on current server
13967: $home -- homeserver of resource (i.e., for author if published,
13968: or course if uploaded.).
13969: $switchserver -- 1 if server switch will be needed.
13970: $forceedit -- 1 if icon/link should be to go to edit mode
13971: $forceview -- 1 if icon/link should be to go to view mode
13972:
13973: =item *
13974:
13975: is_course_upload($file,$cnum,$cdom)
13976:
13977: Used in course context to determine if current file was uploaded to
13978: the course (i.e., would be found in /userfiles/docs on the course's
13979: homeserver.
13980:
13981: input: 3 args -- filename (decluttered), course number and course domain.
13982: output: boolean -- 1 if file was uploaded.
13983:
13984: =back
13985:
13986: =head2 Storing/Retreiving Data
13987:
13988: =over 4
13989:
13990: =item *
13991:
13992: store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
13993: permanently for this url; hashref needs to be given and should be a \%hashname;
13994: the remaining args aren't required and if they aren't passed or are '' they will
13995: be derived from the env (with the exception of $laststore, which is an
13996: optional arg used when a user's submission is stored in grading).
13997: $laststore is $version=$timestamp, where $version is the most recent version
13998: number retrieved for the corresponding $symb in the $namespace db file, and
13999: $timestamp is the timestamp for that transaction (UNIX time).
14000: $laststore is currently only passed when cstore() is called by
14001: structuretags::finalize_storage().
14002:
14003: =item *
14004:
14005: cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
14006: but uses critical subroutine
14007:
14008: =item *
14009:
14010: restore($symb,$namespace,$udom,$uname) : returns hash for this symb;
14011: all args are optional
14012:
14013: =item *
14014:
14015: dumpstore($namespace,$udom,$uname,$regexp,$range) :
14016: dumps the complete (or key matching regexp) namespace into a hash
14017: ($udom, $uname, $regexp, $range are optional) for a namespace that is
14018: normally &store()ed into
14019:
14020: $range should be either an integer '100' (give me the first 100
14021: matching records)
14022: or be two integers sperated by a - with no spaces
14023: '30-50' (give me the 30th through the 50th matching
14024: records)
14025:
14026:
14027: =item *
14028:
14029: putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
14030: replaces a &store() version of data with a replacement set of data
14031: for a particular resource in a namespace passed in the $storehash hash
14032: reference. If $tolog is true, the transaction is logged in the courselog
14033: with an action=PUTSTORE.
14034:
14035: =item *
14036:
14037: tmpstore($storehash,$symb,$namespace,$udom,$uname) : storage that
14038: works very similar to store/cstore, but all data is stored in a
14039: temporary location and can be reset using tmpreset, $storehash should
14040: be a hash reference, returns nothing on success
14041:
14042: =item *
14043:
14044: tmprestore($symb,$namespace,$udom,$uname) : storage that works very
14045: similar to restore, but all data is stored in a temporary location and
14046: can be reset using tmpreset. Returns a hash of values on success,
14047: error string otherwise.
14048:
14049: =item *
14050:
14051: tmpreset($symb,$namespace,$udom,$uname) : temporary storage reset,
14052: deltes all keys for $symb form the temporary storage hash.
14053:
14054: =item *
14055:
14056: get($namespace,$storearr,$udom,$uname) : returns hash with keys from array
14057: reference filled in from namesp ($udom and $uname are optional)
14058:
14059: =item *
14060:
14061: del($namespace,$storearr,$udom,$uname) : deletes keys out of array from
14062: namesp ($udom and $uname are optional)
14063:
14064: =item *
14065:
14066: dump($namespace,$udom,$uname,$regexp,$range) :
14067: dumps the complete (or key matching regexp) namespace into a hash
14068: ($udom, $uname, $regexp, $range are optional)
14069:
14070: $range should be either an integer '100' (give me the first 100
14071: matching records)
14072: or be two integers sperated by a - with no spaces
14073: '30-50' (give me the 30th through the 50th matching
14074: records)
14075: =item *
14076:
14077: inc($namespace,$store,$udom,$uname) : increments $store in $namespace.
14078: $store can be a scalar, an array reference, or if the amount to be
14079: incremented is > 1, a hash reference.
14080:
14081: ($udom and $uname are optional)
14082:
14083: =item *
14084:
14085: put($namespace,$storehash,$udom,$uname) : stores hash in namesp
14086: ($udom and $uname are optional)
14087:
14088: =item *
14089:
14090: cput($namespace,$storehash,$udom,$uname) : critical put
14091: ($udom and $uname are optional)
14092:
14093: =item *
14094:
14095: newput($namespace,$storehash,$udom,$uname) :
14096:
14097: Attempts to store the items in the $storehash, but only if they don't
14098: currently exist, if this succeeds you can be certain that you have
14099: successfully created a new key value pair in the $namespace db.
14100:
14101:
14102: Args:
14103: $namespace: name of database to store values to
14104: $storehash: hashref to store to the db
14105: $udom: (optional) domain of user containing the db
14106: $uname: (optional) name of user caontaining the db
14107:
14108: Returns:
14109: 'ok' -> succeeded in storing all keys of $storehash
14110: 'key_exists: <key>' -> failed to anything out of $storehash, as at
14111: least <key> already existed in the db (other
14112: requested keys may also already exist)
14113: 'error: <msg>' -> unable to tie the DB or other error occurred
14114: 'con_lost' -> unable to contact request server
14115: 'refused' -> action was not allowed by remote machine
14116:
14117:
14118: =item *
14119:
14120: eget($namespace,$storearr,$udom,$uname) : returns hash with keys from array
14121: reference filled in from namesp (encrypts the return communication)
14122: ($udom and $uname are optional)
14123:
14124: =item *
14125:
14126: log($udom,$name,$home,$message) : write to permanent log for user; use
14127: critical subroutine
14128:
14129: =item *
14130:
14131: get_dom($namespace,$storearr,$udom,$uhome) : returns hash with keys from
14132: array reference filled in from namespace found in domain level on either
14133: specified domain server ($uhome) or primary domain server ($udom and $uhome are optional).
14134:
14135: =item *
14136:
14137: put_dom($namespace,$storehash,$udom,$uhome) : stores hash in namespace at
14138: domain level either on specified domain server ($uhome) or primary domain
14139: server ($udom and $uhome are optional)
14140:
14141: =item *
14142:
14143: get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
14144: for: authentication, language, quotas, timezone, date locale, and portal URL in
14145: the target domain.
14146:
14147: May also include additional key => value pairs for the following groups:
14148:
14149: =over
14150:
14151: =item
14152: disk quotas (MB allocated by default to portfolios and authoring spaces).
14153:
14154: =over
14155:
14156: =item defaultquota, authorquota
14157:
14158: =back
14159:
14160: =item
14161: tools (availability of aboutme page, blog, webDAV access for authoring spaces,
14162: portfolio for users).
14163:
14164: =over
14165:
14166: =item
14167: aboutme, blog, webdav, portfolio
14168:
14169: =back
14170:
14171: =item
14172: requestcourses: ability to request courses, and how requests are processed.
14173:
14174: =over
14175:
14176: =item
14177: official, unofficial, community, textbook, placement
14178:
14179: =back
14180:
14181: =item
14182: inststatus: types of institutional affiliation, and order in which they are displayed.
14183:
14184: =over
14185:
14186: =item
14187: inststatustypes, inststatusorder, inststatusguest
14188:
14189: =back
14190:
14191: =item
14192: coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
14193: for course's uploaded content.
14194:
14195: =over
14196:
14197: =item
14198: canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
14199: communityquota, textbookquota, placementquota
14200:
14201: =back
14202:
14203: =item
14204: usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
14205: on your servers.
14206:
14207: =over
14208:
14209: =item
14210: remotesessions, hostedsessions
14211:
14212: =back
14213:
14214: =back
14215:
14216: In cases where a domain coordinator has never used the "Set Domain Configuration"
14217: utility to create a configuration.db file on a domain's primary library server
14218: only the following domain defaults: auth_def, auth_arg_def, lang_def
14219: -- corresponding values are authentication type (internal, krb4, krb5,
14220: or localauth), initial password or a kerberos realm, language (e.g., en-us) --
14221: will be available. Values are retrieved from cache (if current), unless the
14222: optional $ignore_cache arg is true, or from domain's configuration.db (if available),
14223: or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
14224:
14225: Typical usage:
14226:
14227: %domdefaults = &get_domain_defaults($target_domain);
14228:
14229: =back
14230:
14231: =head2 Network Status Functions
14232:
14233: =over 4
14234:
14235: =item *
14236:
14237: dirlist() : return directory list based on URI (first arg).
14238:
14239: Inputs: 1 required, 5 optional.
14240:
14241: =over
14242:
14243: =item
14244: $uri - path to file in filesystem (starts: /res or /userfiles/). Required.
14245:
14246: =item
14247: $userdomain - domain of user/course to be listed. Extracted from $uri if absent.
14248:
14249: =item
14250: $username - username of user/course to be listed. Extracted from $uri if absent.
14251:
14252: =item
14253: $getpropath - boolean: 1 if prepend path using &propath().
14254:
14255: =item
14256: $getuserdir - boolean: 1 if prepend path for "userfiles".
14257:
14258: =item
14259: $alternateRoot - path to prepend in place of path from $uri.
14260:
14261: =back
14262:
14263: Returns: Array of up to two items.
14264:
14265: =over
14266:
14267: a reference to an array of files/subdirectories
14268:
14269: =over
14270:
14271: Each element in the array of files/subdirectories is a & separated list of
14272: item name and the result of running stat on the item. If dirlist was requested
14273: for a file instead of a directory, the item name will be ''. For a directory
14274: listing, if the item is a metadata file, the element will end &N&M
14275: (where N amd M are either 0 or 1, corresponding to obsolete set (1), or
14276: default copyright set (1).
14277:
14278: =back
14279:
14280: a scalar containing error condition (if encountered).
14281:
14282: =over
14283:
14284: =item
14285: no_host (no homeserver identified for $username:$domain).
14286:
14287: =item
14288: no_such_host (server contacted for listing not identified as valid host).
14289:
14290: =item
14291: con_lost (connection to remote server failed).
14292:
14293: =item
14294: refused (invalid $username:$domain received on lond side).
14295:
14296: =item
14297: no_such_dir (directory at specified path on lond side does not exist).
14298:
14299: =item
14300: empty (directory at specified path on lond side is empty).
14301:
14302: =over
14303:
14304: This is currently not encountered because the &ls3, &ls2,
14305: &ls (_handler) routines on the lond side do not filter out
14306: . and .. from a directory listing.
14307:
14308: =back
14309:
14310: =back
14311:
14312: =back
14313:
14314: =item *
14315:
14316: spareserver() : find server with least workload from spare.tab
14317:
14318:
14319: =item *
14320:
14321: host_from_dns($dns) : Returns the loncapa hostname corresponding to a DNS name or undef
14322: if there is no corresponding loncapa host.
14323:
14324: =back
14325:
14326:
14327: =head2 Apache Request
14328:
14329: =over 4
14330:
14331: =item *
14332:
14333: ssi($url,%hash) : server side include, does a complete request cycle on url to
14334: localhost, posts hash
14335:
14336: =back
14337:
14338: =head2 Data to String to Data
14339:
14340: =over 4
14341:
14342: =item *
14343:
14344: hash2str(%hash) : convert a hash into a string complete with escaping and '='
14345: and '&' separators, supports elements that are arrayrefs and hashrefs
14346:
14347: =item *
14348:
14349: hashref2str($hashref) : convert a hashref into a string complete with
14350: escaping and '=' and '&' separators, supports elements that are
14351: arrayrefs and hashrefs
14352:
14353: =item *
14354:
14355: arrayref2str($arrayref) : convert an arrayref into a string complete
14356: with escaping and '&' separators, supports elements that are arrayrefs
14357: and hashrefs
14358:
14359: =item *
14360:
14361: str2hash($string) : convert string to hash using unescaping and
14362: splitting on '=' and '&', supports elements that are arrayrefs and
14363: hashrefs
14364:
14365: =item *
14366:
14367: str2array($string) : convert string to hash using unescaping and
14368: splitting on '&', supports elements that are arrayrefs and hashrefs
14369:
14370: =back
14371:
14372: =head2 Logging Routines
14373:
14374:
14375: These routines allow one to make log messages in the lonnet.log and
14376: lonnet.perm logfiles.
14377:
14378: =over 4
14379:
14380: =item *
14381:
14382: logtouch() : make sure the logfile, lonnet.log, exists
14383:
14384: =item *
14385:
14386: logthis() : append message to the normal lonnet.log file, it gets
14387: preiodically rolled over and deleted.
14388:
14389: =item *
14390:
14391: logperm() : append a permanent message to lonnet.perm.log, this log
14392: file never gets deleted by any automated portion of the system, only
14393: messages of critical importance should go in here.
14394:
14395:
14396: =back
14397:
14398: =head2 General File Helper Routines
14399:
14400: =over 4
14401:
14402: =item *
14403:
14404: getfile($file,$caller) : two cases - requests for files in /res or in /uploaded.
14405: (a) files in /uploaded
14406: (i) If a local copy of the file exists -
14407: compares modification date of local copy with last-modified date for
14408: definitive version stored on home server for course. If local copy is
14409: stale, requests a new version from the home server and stores it.
14410: If the original has been removed from the home server, then local copy
14411: is unlinked.
14412: (ii) If local copy does not exist -
14413: requests the file from the home server and stores it.
14414:
14415: If $caller is 'uploadrep':
14416: This indicates a call from lonuploadrep.pm (PerlHeaderParserHandler phase)
14417: for request for files originally uploaded via DOCS.
14418: - returns 'ok' if fresh local copy now available, -1 otherwise.
14419:
14420: Otherwise:
14421: This indicates a call from the content generation phase of the request.
14422: - returns the entire contents of the file or -1.
14423:
14424: (b) files in /res
14425: - returns the entire contents of a file or -1;
14426: it properly subscribes to and replicates the file if neccessary.
14427:
14428:
14429: =item *
14430:
14431: stat_file($url) : $url is expected to be a /res/ or /uploaded/ style file
14432: reference
14433:
14434: returns either a stat() list of data about the file or an empty list
14435: if the file doesn't exist or couldn't find out about it (connection
14436: problems or user unknown)
14437:
14438: =item *
14439:
14440: filelocation($dir,$file) : returns file system location of a file
14441: based on URI; meant to be "fairly clean" absolute reference, $dir is a
14442: directory that relative $file lookups are to looked in ($dir of /a/dir
14443: and a file of ../bob will become /a/bob)
14444:
14445: =item *
14446:
14447: hreflocation($dir,$file) : returns file system location or a URL; same as
14448: filelocation except for hrefs
14449:
14450: =item *
14451:
14452: declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
14453: also removes beginning /home/httpd/html unless /priv/ follows it.
14454:
14455: =back
14456:
14457: =head2 Usererfile file routines (/uploaded*)
14458:
14459: =over 4
14460:
14461: =item *
14462:
14463: userfileupload(): main rotine for putting a file in a user or course's
14464: filespace, arguments are,
14465:
14466: formname - required - this is the name of the element in $env where the
14467: filename, and the contents of the file to create/modifed exist
14468: the filename is in $env{'form.'.$formname.'.filename'} and the
14469: contents of the file is located in $env{'form.'.$formname}
14470: context - if coursedoc, store the file in the course of the active role
14471: of the current user;
14472: if 'existingfile': store in 'overwrites' in /home/httpd/perl/tmp
14473: if 'canceloverwrite': delete file in tmp/overwrites directory
14474: subdir - required - subdirectory to put the file in under ../userfiles/
14475: if undefined, it will be placed in "unknown"
14476:
14477: (This routine calls clean_filename() to remove any dangerous
14478: characters from the filename, and then calls finuserfileupload() to
14479: complete the transaction)
14480:
14481: returns either the url of the uploaded file (/uploaded/....) if successful
14482: and /adm/notfound.html if unsuccessful
14483:
14484: =item *
14485:
14486: clean_filename(): routine for cleaing a filename up for storage in
14487: userfile space, argument is:
14488:
14489: filename - proposed filename
14490:
14491: returns: the new clean filename
14492:
14493: =item *
14494:
14495: finishuserfileupload(): routine that creates and sends the file to
14496: userspace, probably shouldn't be called directly
14497:
14498: docuname: username or courseid of destination for the file
14499: docudom: domain of user/course of destination for the file
14500: formname: same as for userfileupload()
14501: fname: filename (including subdirectories) for the file
14502: parser: if 'parse', will parse (html) file to extract references to objects, links etc.
14503: allfiles: reference to hash used to store objects found by parser
14504: codebase: reference to hash used for codebases of java objects found by parser
14505: thumbwidth: width (pixels) of thumbnail to be created for uploaded image
14506: thumbheight: height (pixels) of thumbnail to be created for uploaded image
14507: resizewidth: width to be used to resize image using resizeImage from ImageMagick
14508: resizeheight: height to be used to resize image using resizeImage from ImageMagick
14509: context: if 'overwrite', will move the uploaded file from its temporary location to
14510: userfiles to facilitate overwriting a previously uploaded file with same name.
14511: mimetype: reference to scalar to accommodate mime type determined
14512: from File::MMagic if $parser = parse.
14513:
14514: returns either the url of the uploaded file (/uploaded/....) if successful
14515: and /adm/notfound.html if unsuccessful (or an error message if context
14516: was 'overwrite').
14517:
14518:
14519: =item *
14520:
14521: renameuserfile(): renames an existing userfile to a new name
14522:
14523: Args:
14524: docuname: username or courseid of destination for the file
14525: docudom: domain of user/course of destination for the file
14526: old: current file name (including any subdirs under userfiles)
14527: new: desired file name (including any subdirs under userfiles)
14528:
14529: =item *
14530:
14531: mkdiruserfile(): creates a directory is a userfiles dir
14532:
14533: Args:
14534: docuname: username or courseid of destination for the file
14535: docudom: domain of user/course of destination for the file
14536: dir: dir to create (including any subdirs under userfiles)
14537:
14538: =item *
14539:
14540: removeuserfile(): removes a file that exists in userfiles
14541:
14542: Args:
14543: docuname: username or courseid of destination for the file
14544: docudom: domain of user/course of destination for the file
14545: fname: filname to delete (including any subdirs under userfiles)
14546:
14547: =item *
14548:
14549: removeuploadedurl(): convience function for removeuserfile()
14550:
14551: Args:
14552: url: a full /uploaded/... url to delete
14553:
14554: =item *
14555:
14556: get_portfile_permissions():
14557: Args:
14558: domain: domain of user or course contain the portfolio files
14559: user: name of user or num of course contain the portfolio files
14560: Returns:
14561: hashref of a dump of the proper file_permissions.db
14562:
14563:
14564: =item *
14565:
14566: get_access_controls():
14567:
14568: Args:
14569: current_permissions: the hash ref returned from get_portfile_permissions()
14570: group: (optional) the group you want the files associated with
14571: file: (optional) the file you want access info on
14572:
14573: Returns:
14574: a hash (keys are file names) of hashes containing
14575: keys are: path to file/file_name\0uniqueID:scope_end_start (see below)
14576: values are XML containing access control settings (see below)
14577:
14578: Internal notes:
14579:
14580: access controls are stored in file_permissions.db as key=value pairs.
14581: key -> path to file/file_name\0uniqueID:scope_end_start
14582: where scope -> public,guest,course,group,domains or users.
14583: end -> UNIX time for end of access (0 -> no end date)
14584: start -> UNIX time for start of access
14585:
14586: value -> XML description of access control
14587: <scope type=""> (type =1 of: public,guest,course,group,domains,users">
14588: <start></start>
14589: <end></end>
14590:
14591: <password></password> for scope type = guest
14592:
14593: <domain></domain> for scope type = course or group
14594: <number></number>
14595: <roles id="">
14596: <role></role>
14597: <access></access>
14598: <section></section>
14599: <group></group>
14600: </roles>
14601:
14602: <dom></dom> for scope type = domains
14603:
14604: <users> for scope type = users
14605: <user>
14606: <uname></uname>
14607: <udom></udom>
14608: </user>
14609: </users>
14610: </scope>
14611:
14612: Access data is also aggregated for each file in an additional key=value pair:
14613: key -> path to file/file_name\0accesscontrol
14614: value -> reference to hash
14615: hash contains key = value pairs
14616: where key = uniqueID:scope_end_start
14617: value = UNIX time record was last updated
14618:
14619: Used to improve speed of look-ups of access controls for each file.
14620:
14621: Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
14622:
14623: =item *
14624:
14625: modify_access_controls():
14626:
14627: Modifies access controls for a portfolio file
14628: Args
14629: 1. file name
14630: 2. reference to hash of required changes,
14631: 3. domain
14632: 4. username
14633: where domain,username are the domain of the portfolio owner
14634: (either a user or a course)
14635:
14636: Returns:
14637: 1. result of additions or updates ('ok' or 'error', with error message).
14638: 2. result of deletions ('ok' or 'error', with error message).
14639: 3. reference to hash of any new or updated access controls.
14640: 4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
14641: key = integer (inbound ID)
14642: value = uniqueID
14643:
14644: =item *
14645:
14646: get_timebased_id():
14647:
14648: Attempts to get a unique timestamp-based suffix for use with items added to a
14649: course via the Course Editor (e.g., folders, composite pages,
14650: group bulletin boards).
14651:
14652: Args: (first three required; six others optional)
14653:
14654: 1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
14655: docssequence, or name of group
14656:
14657: 2. keyid (alphanumeric): name of temporary locking key in hash,
14658: e.g., num, boardids
14659:
14660: 3. namespace: name of gdbm file used to store suffixes already assigned;
14661: file will be named nohist_namespace.db
14662:
14663: 4. cdom: domain of course; default is current course domain from %env
14664:
14665: 5. cnum: course number; default is current course number from %env
14666:
14667: 6. idtype: set to concat if an additional digit is to be appended to the
14668: unix timestamp to form the suffix, if the plain timestamp is already
14669: in use. Default is to not do this, but simply increment the unix
14670: timestamp by 1 until a unique key is obtained.
14671:
14672: 7. who: holder of locking key; defaults to user:domain for user.
14673:
14674: 8. locktries: number of attempts to obtain a lock (sleep of 1s before
14675: retrying); default is 3.
14676:
14677: 9. maxtries: number of attempts to obtain a unique suffix; default is 20.
14678:
14679: Returns:
14680:
14681: 1. suffix obtained (numeric)
14682:
14683: 2. result of deleting locking key (ok if deleted, or lock never obtained)
14684:
14685: 3. error: contains (localized) error message if an error occurred.
14686:
14687:
14688: =back
14689:
14690: =head2 HTTP Helper Routines
14691:
14692: =over 4
14693:
14694: =item *
14695:
14696: escape() : unpack non-word characters into CGI-compatible hex codes
14697:
14698: =item *
14699:
14700: unescape() : pack CGI-compatible hex codes into actual non-word ASCII character
14701:
14702: =back
14703:
14704: =head1 PRIVATE SUBROUTINES
14705:
14706: =head2 Underlying communication routines (Shouldn't call)
14707:
14708: =over 4
14709:
14710: =item *
14711:
14712: subreply() : tries to pass a message to lonc, returns con_lost if incapable
14713:
14714: =item *
14715:
14716: reply() : uses subreply to send a message to remote machine, logs all failures
14717:
14718: =item *
14719:
14720: critical() : passes a critical message to another server; if cannot
14721: get through then place message in connection buffer directory and
14722: returns con_delayed, if incapable of saving message, returns
14723: con_failed
14724:
14725: =item *
14726:
14727: reconlonc() : tries to reconnect lonc client processes.
14728:
14729: =back
14730:
14731: =head2 Resource Access Logging
14732:
14733: =over 4
14734:
14735: =item *
14736:
14737: flushcourselogs() : flush (save) buffer logs and access logs
14738:
14739: =item *
14740:
14741: courselog($what) : save message for course in hash
14742:
14743: =item *
14744:
14745: courseacclog($what) : save message for course using &courselog(). Perform
14746: special processing for specific resource types (problems, exams, quizzes, etc).
14747:
14748: =item *
14749:
14750: goodbye() : flush course logs and log shutting down; it is called in srm.conf
14751: as a PerlChildExitHandler
14752:
14753: =back
14754:
14755: =head2 Other
14756:
14757: =over 4
14758:
14759: =item *
14760:
14761: symblist($mapname,%newhash) : update symbolic storage links
14762:
14763: =back
14764:
14765: =cut
14766:
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